<?xml version="1.0" encoding="UTF-8"?>

<!--XBRL Document Created with the Workiva Platform-->
<!--Copyright 2026 Workiva-->
<!--r:019f3781-6a44-72fd-b0c6-66c48b802e9b,g:6081cf00-893d-4d64-afdd-77723cae8a17-->
<link:linkbase xmlns:link="http://www.xbrl.org/2003/linkbase" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xbrldt="http://xbrl.org/2005/xbrldt" xsi:schemaLocation="http://www.xbrl.org/2003/linkbase http://www.xbrl.org/2003/xbrl-linkbase-2003-12-31.xsd">
  <link:arcroleRef arcroleURI="http://xbrl.org/int/dim/arcrole/all" xlink:type="simple" xlink:href="http://www.xbrl.org/2005/xbrldt-2005.xsd#all"/>
  <link:arcroleRef arcroleURI="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:type="simple" xlink:href="http://www.xbrl.org/2005/xbrldt-2005.xsd#hypercube-dimension"/>
  <link:arcroleRef arcroleURI="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:type="simple" xlink:href="http://www.xbrl.org/2005/xbrldt-2005.xsd#dimension-default"/>
  <link:arcroleRef arcroleURI="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:type="simple" xlink:href="http://www.xbrl.org/2005/xbrldt-2005.xsd#dimension-domain"/>
  <link:arcroleRef arcroleURI="http://xbrl.org/int/dim/arcrole/domain-member" xlink:type="simple" xlink:href="http://www.xbrl.org/2005/xbrldt-2005.xsd#domain-member"/>
  <link:roleRef roleURI="http://www.leggett.com/role/ConsolidatedCondensedStatementsofChangesinEquity" xlink:type="simple" xlink:href="leg-20260630.xsd#ConsolidatedCondensedStatementsofChangesinEquity"/>
  <link:definitionLink xlink:role="http://www.leggett.com/role/ConsolidatedCondensedStatementsofChangesinEquity" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementLineItems_019f3781-6ce4-72a5-959b-d1b45966e9a4" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_StatementLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementTable_019f3781-6ce4-79ba-9b55-fb7179da9f22" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_StatementTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_StatementLineItems_019f3781-6ce4-72a5-959b-d1b45966e9a4" xlink:to="loc_us-gaap_StatementTable_019f3781-6ce4-79ba-9b55-fb7179da9f22" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementEquityComponentsAxis_019f3781-6ce4-735d-ade9-be243f3cff46" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_StatementEquityComponentsAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_StatementTable_019f3781-6ce4-79ba-9b55-fb7179da9f22" xlink:to="loc_us-gaap_StatementEquityComponentsAxis_019f3781-6ce4-735d-ade9-be243f3cff46" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EquityComponentDomain_019f3781-6ce4-735d-ade9-be243f3cff46_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_EquityComponentDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_StatementEquityComponentsAxis_019f3781-6ce4-735d-ade9-be243f3cff46" xlink:to="loc_us-gaap_EquityComponentDomain_019f3781-6ce4-735d-ade9-be243f3cff46_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EquityComponentDomain_019f3781-6ce4-74d3-b71b-5cb1d1b5f0dc" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_EquityComponentDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_StatementEquityComponentsAxis_019f3781-6ce4-735d-ade9-be243f3cff46" xlink:to="loc_us-gaap_EquityComponentDomain_019f3781-6ce4-74d3-b71b-5cb1d1b5f0dc" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommonStockIncludingAdditionalPaidInCapitalMember_019f3781-6ce4-71fa-8be4-0e4b313f3117" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_CommonStockIncludingAdditionalPaidInCapitalMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EquityComponentDomain_019f3781-6ce4-74d3-b71b-5cb1d1b5f0dc" xlink:to="loc_us-gaap_CommonStockIncludingAdditionalPaidInCapitalMember_019f3781-6ce4-71fa-8be4-0e4b313f3117" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RetainedEarningsMember_019f3781-6ce4-745e-8a55-fcc277362f57" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_RetainedEarningsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EquityComponentDomain_019f3781-6ce4-74d3-b71b-5cb1d1b5f0dc" xlink:to="loc_us-gaap_RetainedEarningsMember_019f3781-6ce4-745e-8a55-fcc277362f57" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccumulatedOtherComprehensiveIncomeMember_019f3781-6ce4-7303-80e4-88ca411538fc" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AccumulatedOtherComprehensiveIncomeMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EquityComponentDomain_019f3781-6ce4-74d3-b71b-5cb1d1b5f0dc" xlink:to="loc_us-gaap_AccumulatedOtherComprehensiveIncomeMember_019f3781-6ce4-7303-80e4-88ca411538fc" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_TreasuryStockCommonMember_019f3781-6ce4-74a5-a42c-76b595276d71" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_TreasuryStockCommonMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EquityComponentDomain_019f3781-6ce4-74d3-b71b-5cb1d1b5f0dc" xlink:to="loc_us-gaap_TreasuryStockCommonMember_019f3781-6ce4-74a5-a42c-76b595276d71" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NoncontrollingInterestMember_019f3781-6ce4-7080-aa4e-d6db5cb9a9e9" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_NoncontrollingInterestMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EquityComponentDomain_019f3781-6ce4-74d3-b71b-5cb1d1b5f0dc" xlink:to="loc_us-gaap_NoncontrollingInterestMember_019f3781-6ce4-7080-aa4e-d6db5cb9a9e9" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_019f3781-6ce4-7286-ad5e-7023a6023abb" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_IncreaseDecreaseInStockholdersEquityRollForward"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_019f3781-6ce4-72a5-959b-d1b45966e9a4" xlink:to="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_019f3781-6ce4-7286-ad5e-7023a6023abb" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest_019f3781-6ce4-7bad-af97-0187b29f3655" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_019f3781-6ce4-7286-ad5e-7023a6023abb" xlink:to="loc_us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest_019f3781-6ce4-7bad-af97-0187b29f3655" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ProfitLoss_019f3781-6ce4-7191-ad16-507cb1d5a499" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ProfitLoss"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_019f3781-6ce4-7286-ad5e-7023a6023abb" xlink:to="loc_us-gaap_ProfitLoss_019f3781-6ce4-7191-ad16-507cb1d5a499" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DividendsCommonStock_019f3781-6ce4-7524-9bc4-fd7442ede2a9" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DividendsCommonStock"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_019f3781-6ce4-7286-ad5e-7023a6023abb" xlink:to="loc_us-gaap_DividendsCommonStock_019f3781-6ce4-7524-9bc4-fd7442ede2a9" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_TreasuryStockValueAcquiredCostMethod_019f3781-6ce4-7fa5-8e05-fa8082638e96" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_TreasuryStockValueAcquiredCostMethod"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_019f3781-6ce4-7286-ad5e-7023a6023abb" xlink:to="loc_us-gaap_TreasuryStockValueAcquiredCostMethod_019f3781-6ce4-7fa5-8e05-fa8082638e96" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockIssuedDuringPeriodValueTreasuryStockReissued_019f3781-6ce4-7851-891e-09b3efd2673e" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_StockIssuedDuringPeriodValueTreasuryStockReissued"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_019f3781-6ce4-7286-ad5e-7023a6023abb" xlink:to="loc_us-gaap_StockIssuedDuringPeriodValueTreasuryStockReissued_019f3781-6ce4-7851-891e-09b3efd2673e" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherComprehensiveIncomeLossNetOfTax_019f3781-6ce4-714f-aa40-31652182a986" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_OtherComprehensiveIncomeLossNetOfTax"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_019f3781-6ce4-7286-ad5e-7023a6023abb" xlink:to="loc_us-gaap_OtherComprehensiveIncomeLossNetOfTax_019f3781-6ce4-714f-aa40-31652182a986" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue_019f3781-6ce4-7be4-9b1d-665560152077" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_019f3781-6ce4-7286-ad5e-7023a6023abb" xlink:to="loc_us-gaap_AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue_019f3781-6ce4-7be4-9b1d-665560152077" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest_019f3781-6ce4-770f-b306-6f9ec349cda3" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.leggett.com/role/InterimPresentationSomnigroupMergerDetails" xlink:type="simple" xlink:href="leg-20260630.xsd#InterimPresentationSomnigroupMergerDetails"/>
  <link:definitionLink xlink:role="http://www.leggett.com/role/InterimPresentationSomnigroupMergerDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessAcquisitionLineItems_019fb452-ada8-7cd3-aaff-4a9433b5b7ca" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_BusinessAcquisitionLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable_019fb452-ada8-72ac-b92a-0a78b80e8e72" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_019fb452-ada8-7cd3-aaff-4a9433b5b7ca" xlink:to="loc_us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable_019fb452-ada8-72ac-b92a-0a78b80e8e72" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessAcquisitionAxis_019fb452-ada8-7700-8f54-6c3ff5adc275" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_BusinessAcquisitionAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable_019fb452-ada8-72ac-b92a-0a78b80e8e72" xlink:to="loc_us-gaap_BusinessAcquisitionAxis_019fb452-ada8-7700-8f54-6c3ff5adc275" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessAcquisitionAcquireeDomain_019fb452-ada8-7700-8f54-6c3ff5adc275_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_BusinessAcquisitionAcquireeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_BusinessAcquisitionAxis_019fb452-ada8-7700-8f54-6c3ff5adc275" xlink:to="loc_us-gaap_BusinessAcquisitionAcquireeDomain_019fb452-ada8-7700-8f54-6c3ff5adc275_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessAcquisitionAcquireeDomain_019fb452-ada8-7f12-b26c-df02e3c92825" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_BusinessAcquisitionAcquireeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_BusinessAcquisitionAxis_019fb452-ada8-7700-8f54-6c3ff5adc275" xlink:to="loc_us-gaap_BusinessAcquisitionAcquireeDomain_019fb452-ada8-7f12-b26c-df02e3c92825" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_leg_LeggettAndPlattMember_019fb452-ada8-76db-a718-eab9be4d8c2d" xlink:href="leg-20260630.xsd#leg_LeggettAndPlattMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionAcquireeDomain_019fb452-ada8-7f12-b26c-df02e3c92825" xlink:to="loc_leg_LeggettAndPlattMember_019fb452-ada8-76db-a718-eab9be4d8c2d" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_LegalEntityAxis_019fb452-ada8-70e5-8b45-3ffdf940088f" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_LegalEntityAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable_019fb452-ada8-72ac-b92a-0a78b80e8e72" xlink:to="loc_dei_LegalEntityAxis_019fb452-ada8-70e5-8b45-3ffdf940088f" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_019fb452-ada8-70e5-8b45-3ffdf940088f_default" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_EntityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_dei_LegalEntityAxis_019fb452-ada8-70e5-8b45-3ffdf940088f" xlink:to="loc_dei_EntityDomain_019fb452-ada8-70e5-8b45-3ffdf940088f_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityDomain_019fb452-ada8-7856-975c-b72c1905d31c" xlink:href="https://xbrl.sec.gov/dei/2026/dei-2026.xsd#dei_EntityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_dei_LegalEntityAxis_019fb452-ada8-70e5-8b45-3ffdf940088f" xlink:to="loc_dei_EntityDomain_019fb452-ada8-7856-975c-b72c1905d31c" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_leg_SomnigroupInternationalIncMember_019fb452-ada8-7805-aee4-0a957f8efad4" xlink:href="leg-20260630.xsd#leg_SomnigroupInternationalIncMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityDomain_019fb452-ada8-7856-975c-b72c1905d31c" xlink:to="loc_leg_SomnigroupInternationalIncMember_019fb452-ada8-7805-aee4-0a957f8efad4" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_leg_LeggettAndPlattShareholdersMember_019fb452-ada8-7462-86e5-847f99b1c4a7" xlink:href="leg-20260630.xsd#leg_LeggettAndPlattShareholdersMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_dei_EntityDomain_019fb452-ada8-7856-975c-b72c1905d31c" xlink:to="loc_leg_LeggettAndPlattShareholdersMember_019fb452-ada8-7462-86e5-847f99b1c4a7" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_OwnershipAxis_019fb452-ada8-75c4-863e-e30cf40d6567" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_OwnershipAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable_019fb452-ada8-72ac-b92a-0a78b80e8e72" xlink:to="loc_srt_OwnershipAxis_019fb452-ada8-75c4-863e-e30cf40d6567" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_OwnershipDomain_019fb452-ada8-75c4-863e-e30cf40d6567_default" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_OwnershipDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_OwnershipAxis_019fb452-ada8-75c4-863e-e30cf40d6567" xlink:to="loc_srt_OwnershipDomain_019fb452-ada8-75c4-863e-e30cf40d6567_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_OwnershipDomain_019fb452-ada8-78ac-8686-a03cff08e7bf" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_OwnershipDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_OwnershipAxis_019fb452-ada8-75c4-863e-e30cf40d6567" xlink:to="loc_srt_OwnershipDomain_019fb452-ada8-78ac-8686-a03cff08e7bf" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_leg_LeggettAndPlattMember_019fb452-ada8-7094-8358-f578b927f1fa" xlink:href="leg-20260630.xsd#leg_LeggettAndPlattMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_OwnershipDomain_019fb452-ada8-78ac-8686-a03cff08e7bf" xlink:to="loc_leg_LeggettAndPlattMember_019fb452-ada8-7094-8358-f578b927f1fa" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SubsequentEventTypeAxis_019fb452-ada8-73fb-905c-e42c12df5cfe" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_SubsequentEventTypeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable_019fb452-ada8-72ac-b92a-0a78b80e8e72" xlink:to="loc_us-gaap_SubsequentEventTypeAxis_019fb452-ada8-73fb-905c-e42c12df5cfe" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SubsequentEventTypeDomain_019fb452-ada8-73fb-905c-e42c12df5cfe_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_SubsequentEventTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_SubsequentEventTypeAxis_019fb452-ada8-73fb-905c-e42c12df5cfe" xlink:to="loc_us-gaap_SubsequentEventTypeDomain_019fb452-ada8-73fb-905c-e42c12df5cfe_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SubsequentEventTypeDomain_019fb452-ada8-7fba-895f-689bcacd723c" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_SubsequentEventTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_SubsequentEventTypeAxis_019fb452-ada8-73fb-905c-e42c12df5cfe" xlink:to="loc_us-gaap_SubsequentEventTypeDomain_019fb452-ada8-7fba-895f-689bcacd723c" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SubsequentEventMember_019fb452-ada8-7630-87cb-c67fd0e263f7" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_SubsequentEventMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SubsequentEventTypeDomain_019fb452-ada8-7fba-895f-689bcacd723c" xlink:to="loc_us-gaap_SubsequentEventMember_019fb452-ada8-7630-87cb-c67fd0e263f7" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_leg_BusinessCombinationRightToReceiveShares_019fb452-ada8-76cf-8504-c473c9ac53dd" xlink:href="leg-20260630.xsd#leg_BusinessCombinationRightToReceiveShares"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_019fb452-ada8-7cd3-aaff-4a9433b5b7ca" xlink:to="loc_leg_BusinessCombinationRightToReceiveShares_019fb452-ada8-76cf-8504-c473c9ac53dd" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommonStockParOrStatedValuePerShare_019fb452-ada8-7a8a-b7f4-27601fbf2944" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_CommonStockParOrStatedValuePerShare"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_019fb452-ada8-7cd3-aaff-4a9433b5b7ca" xlink:to="loc_us-gaap_CommonStockParOrStatedValuePerShare_019fb452-ada8-7a8a-b7f4-27601fbf2944" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_MinorityInterestOwnershipPercentageByNoncontrollingOwners_019fb452-ada8-7ceb-a02f-b321718e93ee" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_MinorityInterestOwnershipPercentageByNoncontrollingOwners"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_019fb452-ada8-7cd3-aaff-4a9433b5b7ca" xlink:to="loc_us-gaap_MinorityInterestOwnershipPercentageByNoncontrollingOwners_019fb452-ada8-7ceb-a02f-b321718e93ee" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessCombinationAcquisitionRelatedCosts_019fb452-ada8-7390-90b2-4a5914de4e7f" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_BusinessCombinationAcquisitionRelatedCosts"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_019fb452-ada8-7cd3-aaff-4a9433b5b7ca" xlink:to="loc_us-gaap_BusinessCombinationAcquisitionRelatedCosts_019fb452-ada8-7390-90b2-4a5914de4e7f" xlink:type="arc" order="3"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.leggett.com/role/RevenueDetails" xlink:type="simple" xlink:href="leg-20260630.xsd#RevenueDetails"/>
  <link:definitionLink xlink:role="http://www.leggett.com/role/RevenueDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DisaggregationOfRevenueLineItems_019f3781-6ce4-7015-ad7e-d3863f0a6735" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DisaggregationOfRevenueLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DisaggregationOfRevenueTable_019f3781-6ce4-7061-a836-1ec8a3de4988" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DisaggregationOfRevenueTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_DisaggregationOfRevenueLineItems_019f3781-6ce4-7015-ad7e-d3863f0a6735" xlink:to="loc_us-gaap_DisaggregationOfRevenueTable_019f3781-6ce4-7061-a836-1ec8a3de4988" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementBusinessSegmentsAxis_019f3781-6ce4-7a40-b308-e455d19ba192" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_StatementBusinessSegmentsAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DisaggregationOfRevenueTable_019f3781-6ce4-7061-a836-1ec8a3de4988" xlink:to="loc_us-gaap_StatementBusinessSegmentsAxis_019f3781-6ce4-7a40-b308-e455d19ba192" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SegmentDomain_019f3781-6ce4-7a40-b308-e455d19ba192_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_SegmentDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_StatementBusinessSegmentsAxis_019f3781-6ce4-7a40-b308-e455d19ba192" xlink:to="loc_us-gaap_SegmentDomain_019f3781-6ce4-7a40-b308-e455d19ba192_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SegmentDomain_019f3781-6ce4-7932-9f96-2e3532bb6873" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_SegmentDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_StatementBusinessSegmentsAxis_019f3781-6ce4-7a40-b308-e455d19ba192" xlink:to="loc_us-gaap_SegmentDomain_019f3781-6ce4-7932-9f96-2e3532bb6873" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_leg_BeddingProductsMember_019f3781-6ce4-74d1-8bd6-5d2c7bdc5b8b" xlink:href="leg-20260630.xsd#leg_BeddingProductsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentDomain_019f3781-6ce4-7932-9f96-2e3532bb6873" xlink:to="loc_leg_BeddingProductsMember_019f3781-6ce4-74d1-8bd6-5d2c7bdc5b8b" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_leg_SpecializedProductsMember_019f3781-6ce4-770b-b690-bfcc43f81a3d" xlink:href="leg-20260630.xsd#leg_SpecializedProductsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentDomain_019f3781-6ce4-7932-9f96-2e3532bb6873" xlink:to="loc_leg_SpecializedProductsMember_019f3781-6ce4-770b-b690-bfcc43f81a3d" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_leg_FurnitureFlooringAndTextileProductsMember_019f3781-6ce4-7e84-94bb-3afeaf0293d7" xlink:href="leg-20260630.xsd#leg_FurnitureFlooringAndTextileProductsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentDomain_019f3781-6ce4-7932-9f96-2e3532bb6873" xlink:to="loc_leg_FurnitureFlooringAndTextileProductsMember_019f3781-6ce4-7e84-94bb-3afeaf0293d7" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ProductOrServiceAxis_019f3781-6ce4-72b7-a4ad-1edf795d45fe" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_ProductOrServiceAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DisaggregationOfRevenueTable_019f3781-6ce4-7061-a836-1ec8a3de4988" xlink:to="loc_srt_ProductOrServiceAxis_019f3781-6ce4-72b7-a4ad-1edf795d45fe" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ProductsAndServicesDomain_019f3781-6ce4-72b7-a4ad-1edf795d45fe_default" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_ProductsAndServicesDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_ProductOrServiceAxis_019f3781-6ce4-72b7-a4ad-1edf795d45fe" xlink:to="loc_srt_ProductsAndServicesDomain_019f3781-6ce4-72b7-a4ad-1edf795d45fe_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ProductsAndServicesDomain_019f3781-6ce4-795b-ae15-116397b2f019" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_ProductsAndServicesDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_ProductOrServiceAxis_019f3781-6ce4-72b7-a4ad-1edf795d45fe" xlink:to="loc_srt_ProductsAndServicesDomain_019f3781-6ce4-795b-ae15-116397b2f019" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_leg_BeddingGroupMember_019f3781-6ce4-7176-acfa-0f6d47fa1a38" xlink:href="leg-20260630.xsd#leg_BeddingGroupMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ProductsAndServicesDomain_019f3781-6ce4-795b-ae15-116397b2f019" xlink:to="loc_leg_BeddingGroupMember_019f3781-6ce4-7176-acfa-0f6d47fa1a38" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_leg_AutomotiveGroupMember_019f3781-6ce4-7eee-9764-fea52a91d5be" xlink:href="leg-20260630.xsd#leg_AutomotiveGroupMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ProductsAndServicesDomain_019f3781-6ce4-795b-ae15-116397b2f019" xlink:to="loc_leg_AutomotiveGroupMember_019f3781-6ce4-7eee-9764-fea52a91d5be" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_leg_AerospaceProductsGroupMember_019f3781-6ce4-7755-97d9-d3f9ade6479d" xlink:href="leg-20260630.xsd#leg_AerospaceProductsGroupMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ProductsAndServicesDomain_019f3781-6ce4-795b-ae15-116397b2f019" xlink:to="loc_leg_AerospaceProductsGroupMember_019f3781-6ce4-7755-97d9-d3f9ade6479d" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_leg_HydraulicCylindersMember_019f3781-6ce4-760b-85bc-63ea79a60e7d" xlink:href="leg-20260630.xsd#leg_HydraulicCylindersMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ProductsAndServicesDomain_019f3781-6ce4-795b-ae15-116397b2f019" xlink:to="loc_leg_HydraulicCylindersMember_019f3781-6ce4-760b-85bc-63ea79a60e7d" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_leg_HomeFurnitureGroupMember_019f3781-6ce4-7bde-b62e-0d7bea3b2eee" xlink:href="leg-20260630.xsd#leg_HomeFurnitureGroupMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ProductsAndServicesDomain_019f3781-6ce4-795b-ae15-116397b2f019" xlink:to="loc_leg_HomeFurnitureGroupMember_019f3781-6ce4-7bde-b62e-0d7bea3b2eee" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_leg_WorkFurnitureGroupMember_019f3781-6ce4-799e-a9ee-520aa2e74043" xlink:href="leg-20260630.xsd#leg_WorkFurnitureGroupMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ProductsAndServicesDomain_019f3781-6ce4-795b-ae15-116397b2f019" xlink:to="loc_leg_WorkFurnitureGroupMember_019f3781-6ce4-799e-a9ee-520aa2e74043" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_leg_FlooringAndTextileProductsGroupMember_019f3781-6ce4-7dd7-a8ab-831dbe5a427c" xlink:href="leg-20260630.xsd#leg_FlooringAndTextileProductsGroupMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ProductsAndServicesDomain_019f3781-6ce4-795b-ae15-116397b2f019" xlink:to="loc_leg_FlooringAndTextileProductsGroupMember_019f3781-6ce4-7dd7-a8ab-831dbe5a427c" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax_019f3781-6ce4-7d4f-97e3-1d585fd79d8c" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DisaggregationOfRevenueLineItems_019f3781-6ce4-7015-ad7e-d3863f0a6735" xlink:to="loc_us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax_019f3781-6ce4-7d4f-97e3-1d585fd79d8c" xlink:type="arc" order="0"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.leggett.com/role/SegmentInformationScheduleofSegmentResultsfromContinuingOperationsDetails" xlink:type="simple" xlink:href="leg-20260630.xsd#SegmentInformationScheduleofSegmentResultsfromContinuingOperationsDetails"/>
  <link:definitionLink xlink:role="http://www.leggett.com/role/SegmentInformationScheduleofSegmentResultsfromContinuingOperationsDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SegmentReportingInformationLineItems_019f3781-6ce4-71cf-9f7f-f8ffb9a13fd0" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_SegmentReportingInformationLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_019f3781-6ce4-75b2-a07f-bfb469c7ec90" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_019f3781-6ce4-71cf-9f7f-f8ffb9a13fd0" xlink:to="loc_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_019f3781-6ce4-75b2-a07f-bfb469c7ec90" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ConsolidationItemsAxis_019f3781-6ce4-724f-b522-9e82baa42f32" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_ConsolidationItemsAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_019f3781-6ce4-75b2-a07f-bfb469c7ec90" xlink:to="loc_srt_ConsolidationItemsAxis_019f3781-6ce4-724f-b522-9e82baa42f32" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ConsolidationItemsDomain_019f3781-6ce4-724f-b522-9e82baa42f32_default" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_ConsolidationItemsDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_ConsolidationItemsAxis_019f3781-6ce4-724f-b522-9e82baa42f32" xlink:to="loc_srt_ConsolidationItemsDomain_019f3781-6ce4-724f-b522-9e82baa42f32_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ConsolidationItemsDomain_019f3781-6ce4-71de-934e-6186b94e905b" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_ConsolidationItemsDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_ConsolidationItemsAxis_019f3781-6ce4-724f-b522-9e82baa42f32" xlink:to="loc_srt_ConsolidationItemsDomain_019f3781-6ce4-71de-934e-6186b94e905b" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingSegmentsMember_019f3781-6ce4-71bd-99fa-c5aa44efe73f" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_OperatingSegmentsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ConsolidationItemsDomain_019f3781-6ce4-71de-934e-6186b94e905b" xlink:to="loc_us-gaap_OperatingSegmentsMember_019f3781-6ce4-71bd-99fa-c5aa44efe73f" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IntersegmentEliminationMember_019f3781-6ce4-7d02-9949-d62958f5b6c1" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_IntersegmentEliminationMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ConsolidationItemsDomain_019f3781-6ce4-71de-934e-6186b94e905b" xlink:to="loc_us-gaap_IntersegmentEliminationMember_019f3781-6ce4-7d02-9949-d62958f5b6c1" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementBusinessSegmentsAxis_019f3781-6ce4-7156-b829-762ee6f0cb94" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_StatementBusinessSegmentsAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_019f3781-6ce4-75b2-a07f-bfb469c7ec90" xlink:to="loc_us-gaap_StatementBusinessSegmentsAxis_019f3781-6ce4-7156-b829-762ee6f0cb94" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SegmentDomain_019f3781-6ce4-7156-b829-762ee6f0cb94_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_SegmentDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_StatementBusinessSegmentsAxis_019f3781-6ce4-7156-b829-762ee6f0cb94" xlink:to="loc_us-gaap_SegmentDomain_019f3781-6ce4-7156-b829-762ee6f0cb94_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SegmentDomain_019f3781-6ce4-7c36-9bb8-9150bd7939cd" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_SegmentDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_StatementBusinessSegmentsAxis_019f3781-6ce4-7156-b829-762ee6f0cb94" xlink:to="loc_us-gaap_SegmentDomain_019f3781-6ce4-7c36-9bb8-9150bd7939cd" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_leg_BeddingProductsMember_019f3781-6ce4-7f15-84a2-d7ae59198243" xlink:href="leg-20260630.xsd#leg_BeddingProductsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentDomain_019f3781-6ce4-7c36-9bb8-9150bd7939cd" xlink:to="loc_leg_BeddingProductsMember_019f3781-6ce4-7f15-84a2-d7ae59198243" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_leg_SpecializedProductsMember_019f3781-6ce4-7a19-966c-26dd9bfd7a79" xlink:href="leg-20260630.xsd#leg_SpecializedProductsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentDomain_019f3781-6ce4-7c36-9bb8-9150bd7939cd" xlink:to="loc_leg_SpecializedProductsMember_019f3781-6ce4-7a19-966c-26dd9bfd7a79" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_leg_FurnitureFlooringAndTextileProductsMember_019f3781-6ce4-73d9-b4c5-68cac3136dd3" xlink:href="leg-20260630.xsd#leg_FurnitureFlooringAndTextileProductsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentDomain_019f3781-6ce4-7c36-9bb8-9150bd7939cd" xlink:to="loc_leg_FurnitureFlooringAndTextileProductsMember_019f3781-6ce4-73d9-b4c5-68cac3136dd3" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SubsegmentsConsolidationItemsAxis_019f3781-6ce4-79aa-ab74-c706b902f115" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_SubsegmentsConsolidationItemsAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_019f3781-6ce4-75b2-a07f-bfb469c7ec90" xlink:to="loc_us-gaap_SubsegmentsConsolidationItemsAxis_019f3781-6ce4-79aa-ab74-c706b902f115" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SubsegmentsConsolidationItemsDomain_019f3781-6ce4-79aa-ab74-c706b902f115_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_SubsegmentsConsolidationItemsDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_SubsegmentsConsolidationItemsAxis_019f3781-6ce4-79aa-ab74-c706b902f115" xlink:to="loc_us-gaap_SubsegmentsConsolidationItemsDomain_019f3781-6ce4-79aa-ab74-c706b902f115_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SubsegmentsConsolidationItemsDomain_019f3781-6ce4-72ec-9e4f-8f3fa6edb6ae" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_SubsegmentsConsolidationItemsDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_SubsegmentsConsolidationItemsAxis_019f3781-6ce4-79aa-ab74-c706b902f115" xlink:to="loc_us-gaap_SubsegmentsConsolidationItemsDomain_019f3781-6ce4-72ec-9e4f-8f3fa6edb6ae" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ReportableSubsegmentsMember_019f3781-6ce4-7e29-a99d-86f4032cdcec" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ReportableSubsegmentsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SubsegmentsConsolidationItemsDomain_019f3781-6ce4-72ec-9e4f-8f3fa6edb6ae" xlink:to="loc_us-gaap_ReportableSubsegmentsMember_019f3781-6ce4-7e29-a99d-86f4032cdcec" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IntersubsegmentEliminationsMember_019f3781-6ce4-7f3d-9f2d-1f1d15f43669" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_IntersubsegmentEliminationsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SubsegmentsConsolidationItemsDomain_019f3781-6ce4-72ec-9e4f-8f3fa6edb6ae" xlink:to="loc_us-gaap_IntersubsegmentEliminationsMember_019f3781-6ce4-7f3d-9f2d-1f1d15f43669" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax_019f3781-6ce4-73d5-bdb7-5b0b613b7229" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_019f3781-6ce4-71cf-9f7f-f8ffb9a13fd0" xlink:to="loc_us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax_019f3781-6ce4-73d5-bdb7-5b0b613b7229" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherDepreciationAndAmortization_019f3781-6ce4-7781-b8a4-85262c890326" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_OtherDepreciationAndAmortization"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_019f3781-6ce4-71cf-9f7f-f8ffb9a13fd0" xlink:to="loc_us-gaap_OtherDepreciationAndAmortization_019f3781-6ce4-7781-b8a4-85262c890326" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_leg_DepreciationAndAmortizationNonoperatingAssets_019f3781-6ce4-7a56-b9a9-535a9b05480f" xlink:href="leg-20260630.xsd#leg_DepreciationAndAmortizationNonoperatingAssets"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_019f3781-6ce4-71cf-9f7f-f8ffb9a13fd0" xlink:to="loc_leg_DepreciationAndAmortizationNonoperatingAssets_019f3781-6ce4-7a56-b9a9-535a9b05480f" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DepreciationDepletionAndAmortization_019f3781-6ce4-733f-9ee8-7d09387136a9" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DepreciationDepletionAndAmortization"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_019f3781-6ce4-71cf-9f7f-f8ffb9a13fd0" xlink:to="loc_us-gaap_DepreciationDepletionAndAmortization_019f3781-6ce4-733f-9ee8-7d09387136a9" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RestructuringCostsAndAssetImpairmentCharges_019f3781-6ce4-72b9-9a73-055f13e68e0a" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_RestructuringCostsAndAssetImpairmentCharges"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_019f3781-6ce4-71cf-9f7f-f8ffb9a13fd0" xlink:to="loc_us-gaap_RestructuringCostsAndAssetImpairmentCharges_019f3781-6ce4-72b9-9a73-055f13e68e0a" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_GainsLossesOnSalesOfInvestmentRealEstate_019f3781-6ce4-78fd-9d43-aa368a294568" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_GainsLossesOnSalesOfInvestmentRealEstate"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_019f3781-6ce4-71cf-9f7f-f8ffb9a13fd0" xlink:to="loc_us-gaap_GainsLossesOnSalesOfInvestmentRealEstate_019f3781-6ce4-78fd-9d43-aa368a294568" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SegmentReportingOtherItemAmount_019f3781-6ce4-7a50-a9a6-c38be2f33b80" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_SegmentReportingOtherItemAmount"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_019f3781-6ce4-71cf-9f7f-f8ffb9a13fd0" xlink:to="loc_us-gaap_SegmentReportingOtherItemAmount_019f3781-6ce4-7a50-a9a6-c38be2f33b80" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeLossFromContinuingOperationsBeforeInterestExpenseInterestIncomeIncomeTaxesExtraordinaryItemsNoncontrollingInterestsNet_019f3781-6ce4-75a5-a88e-c624576d62f0" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_IncomeLossFromContinuingOperationsBeforeInterestExpenseInterestIncomeIncomeTaxesExtraordinaryItemsNoncontrollingInterestsNet"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_019f3781-6ce4-71cf-9f7f-f8ffb9a13fd0" xlink:to="loc_us-gaap_IncomeLossFromContinuingOperationsBeforeInterestExpenseInterestIncomeIncomeTaxesExtraordinaryItemsNoncontrollingInterestsNet_019f3781-6ce4-75a5-a88e-c624576d62f0" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InterestRevenueExpenseNet_019f3781-6ce4-720a-b7be-dff46a640f71" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_InterestRevenueExpenseNet"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_019f3781-6ce4-71cf-9f7f-f8ffb9a13fd0" xlink:to="loc_us-gaap_InterestRevenueExpenseNet_019f3781-6ce4-720a-b7be-dff46a640f71" xlink:type="arc" order="8"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest_019f3781-6ce4-78b4-b271-30cf014468a3" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_019f3781-6ce4-71cf-9f7f-f8ffb9a13fd0" xlink:to="loc_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest_019f3781-6ce4-78b4-b271-30cf014468a3" xlink:type="arc" order="9"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessCombinationAcquisitionRelatedCosts_019f3781-6ce4-7fb8-ba11-7a3726fc2525" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_BusinessCombinationAcquisitionRelatedCosts"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_019f3781-6ce4-71cf-9f7f-f8ffb9a13fd0" xlink:to="loc_us-gaap_BusinessCombinationAcquisitionRelatedCosts_019f3781-6ce4-7fb8-ba11-7a3726fc2525" xlink:type="arc" order="10"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.leggett.com/role/SegmentInformationScheduleofAverageAssetsforSegmentsDetails" xlink:type="simple" xlink:href="leg-20260630.xsd#SegmentInformationScheduleofAverageAssetsforSegmentsDetails"/>
  <link:definitionLink xlink:role="http://www.leggett.com/role/SegmentInformationScheduleofAverageAssetsforSegmentsDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SegmentReportingInformationLineItems_019f3781-6ce4-788e-8758-b1b3067e0eea" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_SegmentReportingInformationLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_019f3781-6ce4-7fc0-97bf-b685abc0cc97" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_019f3781-6ce4-788e-8758-b1b3067e0eea" xlink:to="loc_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_019f3781-6ce4-7fc0-97bf-b685abc0cc97" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ConsolidationItemsAxis_019f3781-6ce4-7b53-a9db-70095620c680" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_ConsolidationItemsAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_019f3781-6ce4-7fc0-97bf-b685abc0cc97" xlink:to="loc_srt_ConsolidationItemsAxis_019f3781-6ce4-7b53-a9db-70095620c680" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ConsolidationItemsDomain_019f3781-6ce4-7b53-a9db-70095620c680_default" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_ConsolidationItemsDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_ConsolidationItemsAxis_019f3781-6ce4-7b53-a9db-70095620c680" xlink:to="loc_srt_ConsolidationItemsDomain_019f3781-6ce4-7b53-a9db-70095620c680_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ConsolidationItemsDomain_019f3781-6ce4-73da-90c9-fd1889e7a6a3" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_ConsolidationItemsDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_ConsolidationItemsAxis_019f3781-6ce4-7b53-a9db-70095620c680" xlink:to="loc_srt_ConsolidationItemsDomain_019f3781-6ce4-73da-90c9-fd1889e7a6a3" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingSegmentsMember_019f3781-6ce4-7a85-97da-53a47dfaf538" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_OperatingSegmentsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ConsolidationItemsDomain_019f3781-6ce4-73da-90c9-fd1889e7a6a3" xlink:to="loc_us-gaap_OperatingSegmentsMember_019f3781-6ce4-7a85-97da-53a47dfaf538" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CorporateNonSegmentMember_019f3781-6ce4-7377-b1d2-a88b1fb54c9e" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_CorporateNonSegmentMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ConsolidationItemsDomain_019f3781-6ce4-73da-90c9-fd1889e7a6a3" xlink:to="loc_us-gaap_CorporateNonSegmentMember_019f3781-6ce4-7377-b1d2-a88b1fb54c9e" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_leg_EliminationsAndReconcilingItemsMember_019f3781-6ce4-7773-b809-1c57c8afbf58" xlink:href="leg-20260630.xsd#leg_EliminationsAndReconcilingItemsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ConsolidationItemsDomain_019f3781-6ce4-73da-90c9-fd1889e7a6a3" xlink:to="loc_leg_EliminationsAndReconcilingItemsMember_019f3781-6ce4-7773-b809-1c57c8afbf58" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_MaterialReconcilingItemsMember_019f3781-6ce4-7e0a-9f9d-7b74c844f40f" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_MaterialReconcilingItemsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ConsolidationItemsDomain_019f3781-6ce4-73da-90c9-fd1889e7a6a3" xlink:to="loc_us-gaap_MaterialReconcilingItemsMember_019f3781-6ce4-7e0a-9f9d-7b74c844f40f" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementBusinessSegmentsAxis_019f3781-6ce4-7ea1-ace2-63edbbe3644d" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_StatementBusinessSegmentsAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_019f3781-6ce4-7fc0-97bf-b685abc0cc97" xlink:to="loc_us-gaap_StatementBusinessSegmentsAxis_019f3781-6ce4-7ea1-ace2-63edbbe3644d" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SegmentDomain_019f3781-6ce4-7ea1-ace2-63edbbe3644d_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_SegmentDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_StatementBusinessSegmentsAxis_019f3781-6ce4-7ea1-ace2-63edbbe3644d" xlink:to="loc_us-gaap_SegmentDomain_019f3781-6ce4-7ea1-ace2-63edbbe3644d_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SegmentDomain_019f3781-6ce4-7cc4-9b2c-4c0acabc2d65" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_SegmentDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_StatementBusinessSegmentsAxis_019f3781-6ce4-7ea1-ace2-63edbbe3644d" xlink:to="loc_us-gaap_SegmentDomain_019f3781-6ce4-7cc4-9b2c-4c0acabc2d65" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_leg_BeddingProductsMember_019f3781-6ce4-7200-973e-1db9ad898ad5" xlink:href="leg-20260630.xsd#leg_BeddingProductsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentDomain_019f3781-6ce4-7cc4-9b2c-4c0acabc2d65" xlink:to="loc_leg_BeddingProductsMember_019f3781-6ce4-7200-973e-1db9ad898ad5" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_leg_SpecializedProductsMember_019f3781-6ce4-7aa9-a398-5068bf1ca4df" xlink:href="leg-20260630.xsd#leg_SpecializedProductsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentDomain_019f3781-6ce4-7cc4-9b2c-4c0acabc2d65" xlink:to="loc_leg_SpecializedProductsMember_019f3781-6ce4-7aa9-a398-5068bf1ca4df" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_leg_FurnitureFlooringAndTextileProductsMember_019f3781-6ce4-7598-9efe-ec78c63cad48" xlink:href="leg-20260630.xsd#leg_FurnitureFlooringAndTextileProductsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentDomain_019f3781-6ce4-7cc4-9b2c-4c0acabc2d65" xlink:to="loc_leg_FurnitureFlooringAndTextileProductsMember_019f3781-6ce4-7598-9efe-ec78c63cad48" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_Assets_019f3781-6ce4-76ec-a006-eb010d5082b8" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_Assets"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_019f3781-6ce4-788e-8758-b1b3067e0eea" xlink:to="loc_us-gaap_Assets_019f3781-6ce4-76ec-a006-eb010d5082b8" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_Liabilities_019f3781-6ce4-7bee-a7cb-fa706bb0be0b" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_Liabilities"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_019f3781-6ce4-788e-8758-b1b3067e0eea" xlink:to="loc_us-gaap_Liabilities_019f3781-6ce4-7bee-a7cb-fa706bb0be0b" xlink:type="arc" order="1"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.leggett.com/role/RestructuringandRelatedActivitiesNarrativeDetails" xlink:type="simple" xlink:href="leg-20260630.xsd#RestructuringandRelatedActivitiesNarrativeDetails"/>
  <link:definitionLink xlink:role="http://www.leggett.com/role/RestructuringandRelatedActivitiesNarrativeDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RestructuringCostAndReserveLineItems_019f3781-6ce4-753d-9b92-f2e4e8d33ba1" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_RestructuringCostAndReserveLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfRestructuringAndRelatedCostsTable_019f3781-6ce4-7c3d-958e-667ae5caeb32" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ScheduleOfRestructuringAndRelatedCostsTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_RestructuringCostAndReserveLineItems_019f3781-6ce4-753d-9b92-f2e4e8d33ba1" xlink:to="loc_us-gaap_ScheduleOfRestructuringAndRelatedCostsTable_019f3781-6ce4-7c3d-958e-667ae5caeb32" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RestructuringPlanAxis_019f3781-6ce4-7f0e-ba87-bd6544ad9ce5" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_RestructuringPlanAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfRestructuringAndRelatedCostsTable_019f3781-6ce4-7c3d-958e-667ae5caeb32" xlink:to="loc_us-gaap_RestructuringPlanAxis_019f3781-6ce4-7f0e-ba87-bd6544ad9ce5" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RestructuringPlanDomain_019f3781-6ce4-7f0e-ba87-bd6544ad9ce5_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_RestructuringPlanDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_RestructuringPlanAxis_019f3781-6ce4-7f0e-ba87-bd6544ad9ce5" xlink:to="loc_us-gaap_RestructuringPlanDomain_019f3781-6ce4-7f0e-ba87-bd6544ad9ce5_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RestructuringPlanDomain_019f3781-6ce4-7df0-ab2e-f940b755a32b" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_RestructuringPlanDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_RestructuringPlanAxis_019f3781-6ce4-7f0e-ba87-bd6544ad9ce5" xlink:to="loc_us-gaap_RestructuringPlanDomain_019f3781-6ce4-7df0-ab2e-f940b755a32b" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_leg_A2024RestructuringPlanMember_019f3781-6ce4-713c-ab30-669954fafa29" xlink:href="leg-20260630.xsd#leg_A2024RestructuringPlanMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RestructuringPlanDomain_019f3781-6ce4-7df0-ab2e-f940b755a32b" xlink:to="loc_leg_A2024RestructuringPlanMember_019f3781-6ce4-713c-ab30-669954fafa29" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_leg_A2026RestructuringPlanMember_019f3781-6ce4-7d0e-a287-80c284946965" xlink:href="leg-20260630.xsd#leg_A2026RestructuringPlanMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RestructuringPlanDomain_019f3781-6ce4-7df0-ab2e-f940b755a32b" xlink:to="loc_leg_A2026RestructuringPlanMember_019f3781-6ce4-7d0e-a287-80c284946965" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementBusinessSegmentsAxis_019f3781-6ce4-7f1b-bc99-f981e4fc952e" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_StatementBusinessSegmentsAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfRestructuringAndRelatedCostsTable_019f3781-6ce4-7c3d-958e-667ae5caeb32" xlink:to="loc_us-gaap_StatementBusinessSegmentsAxis_019f3781-6ce4-7f1b-bc99-f981e4fc952e" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SegmentDomain_019f3781-6ce4-7f1b-bc99-f981e4fc952e_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_SegmentDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_StatementBusinessSegmentsAxis_019f3781-6ce4-7f1b-bc99-f981e4fc952e" xlink:to="loc_us-gaap_SegmentDomain_019f3781-6ce4-7f1b-bc99-f981e4fc952e_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SegmentDomain_019f3781-6ce4-7a20-bf0d-488a825396ec" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_SegmentDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_StatementBusinessSegmentsAxis_019f3781-6ce4-7f1b-bc99-f981e4fc952e" xlink:to="loc_us-gaap_SegmentDomain_019f3781-6ce4-7a20-bf0d-488a825396ec" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_leg_BeddingProductsMember_019f3781-6ce4-7946-978c-1c8e86b0bf67" xlink:href="leg-20260630.xsd#leg_BeddingProductsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentDomain_019f3781-6ce4-7a20-bf0d-488a825396ec" xlink:to="loc_leg_BeddingProductsMember_019f3781-6ce4-7946-978c-1c8e86b0bf67" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_leg_FurnitureFlooringAndTextileProductsMember_019f3781-6ce4-7abd-8bc5-80dea65b2a41" xlink:href="leg-20260630.xsd#leg_FurnitureFlooringAndTextileProductsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentDomain_019f3781-6ce4-7a20-bf0d-488a825396ec" xlink:to="loc_leg_FurnitureFlooringAndTextileProductsMember_019f3781-6ce4-7abd-8bc5-80dea65b2a41" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_leg_RestructuringAndRelatedCostNumberOfFacilitiesConsolidated_019f3781-6ce4-7b44-8077-e459a39fc3ee" xlink:href="leg-20260630.xsd#leg_RestructuringAndRelatedCostNumberOfFacilitiesConsolidated"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RestructuringCostAndReserveLineItems_019f3781-6ce4-753d-9b92-f2e4e8d33ba1" xlink:to="loc_leg_RestructuringAndRelatedCostNumberOfFacilitiesConsolidated_019f3781-6ce4-7b44-8077-e459a39fc3ee" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RestructuringAndRelatedCostExpectedCost1_019f3781-6ce4-7542-a2bd-aec56209863f" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_RestructuringAndRelatedCostExpectedCost1"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RestructuringCostAndReserveLineItems_019f3781-6ce4-753d-9b92-f2e4e8d33ba1" xlink:to="loc_us-gaap_RestructuringAndRelatedCostExpectedCost1_019f3781-6ce4-7542-a2bd-aec56209863f" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_GainsLossesOnSalesOfOtherRealEstate_019f3781-6ce4-7a78-9c53-e2716a17a0bd" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_GainsLossesOnSalesOfOtherRealEstate"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RestructuringCostAndReserveLineItems_019f3781-6ce4-753d-9b92-f2e4e8d33ba1" xlink:to="loc_us-gaap_GainsLossesOnSalesOfOtherRealEstate_019f3781-6ce4-7a78-9c53-e2716a17a0bd" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RestructuringReserve_019f3781-6ce4-74ca-a9bc-aa1f20c07677" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_RestructuringReserve"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RestructuringCostAndReserveLineItems_019f3781-6ce4-753d-9b92-f2e4e8d33ba1" xlink:to="loc_us-gaap_RestructuringReserve_019f3781-6ce4-74ca-a9bc-aa1f20c07677" xlink:type="arc" order="3"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.leggett.com/role/RestructuringandRelatedActivitiesScheduleofIncurredCostsDetails" xlink:type="simple" xlink:href="leg-20260630.xsd#RestructuringandRelatedActivitiesScheduleofIncurredCostsDetails"/>
  <link:definitionLink xlink:role="http://www.leggett.com/role/RestructuringandRelatedActivitiesScheduleofIncurredCostsDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RestructuringCostAndReserveLineItems_019f3781-6ce4-7b54-b910-99da4223c979" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_RestructuringCostAndReserveLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfRestructuringAndRelatedCostsTable_019f3781-6ce4-79b9-af26-804fdb4f2aa3" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ScheduleOfRestructuringAndRelatedCostsTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_RestructuringCostAndReserveLineItems_019f3781-6ce4-7b54-b910-99da4223c979" xlink:to="loc_us-gaap_ScheduleOfRestructuringAndRelatedCostsTable_019f3781-6ce4-79b9-af26-804fdb4f2aa3" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RestructuringCostAndReserveAxis_019f3781-6ce4-742b-8c05-a0bd70a59f82" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_RestructuringCostAndReserveAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfRestructuringAndRelatedCostsTable_019f3781-6ce4-79b9-af26-804fdb4f2aa3" xlink:to="loc_us-gaap_RestructuringCostAndReserveAxis_019f3781-6ce4-742b-8c05-a0bd70a59f82" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_TypeOfRestructuringDomain_019f3781-6ce4-742b-8c05-a0bd70a59f82_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_TypeOfRestructuringDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_RestructuringCostAndReserveAxis_019f3781-6ce4-742b-8c05-a0bd70a59f82" xlink:to="loc_us-gaap_TypeOfRestructuringDomain_019f3781-6ce4-742b-8c05-a0bd70a59f82_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_TypeOfRestructuringDomain_019f3781-6ce4-70c7-a8b0-b0cb42dde11e" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_TypeOfRestructuringDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_RestructuringCostAndReserveAxis_019f3781-6ce4-742b-8c05-a0bd70a59f82" xlink:to="loc_us-gaap_TypeOfRestructuringDomain_019f3781-6ce4-70c7-a8b0-b0cb42dde11e" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherRestructuringMember_019f3781-6ce4-712e-8f48-4a5da8a0109a" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_OtherRestructuringMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_TypeOfRestructuringDomain_019f3781-6ce4-70c7-a8b0-b0cb42dde11e" xlink:to="loc_us-gaap_OtherRestructuringMember_019f3781-6ce4-712e-8f48-4a5da8a0109a" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_leg_OtherRestructuringNetCashMember_019f3781-6ce4-7879-aa00-21d7fbe93709" xlink:href="leg-20260630.xsd#leg_OtherRestructuringNetCashMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_OtherRestructuringMember_019f3781-6ce4-712e-8f48-4a5da8a0109a" xlink:to="loc_leg_OtherRestructuringNetCashMember_019f3781-6ce4-7879-aa00-21d7fbe93709" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_leg_OtherRestructuringNetNonCashMember_019f3781-6ce4-7d8b-9560-b742e7729b26" xlink:href="leg-20260630.xsd#leg_OtherRestructuringNetNonCashMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_OtherRestructuringMember_019f3781-6ce4-712e-8f48-4a5da8a0109a" xlink:to="loc_leg_OtherRestructuringNetNonCashMember_019f3781-6ce4-7d8b-9560-b742e7729b26" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_leg_ImpairmentCostsRestructuringMember_019f3781-6ce4-7bbf-8a5e-7f7e36876d55" xlink:href="leg-20260630.xsd#leg_ImpairmentCostsRestructuringMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_TypeOfRestructuringDomain_019f3781-6ce4-70c7-a8b0-b0cb42dde11e" xlink:to="loc_leg_ImpairmentCostsRestructuringMember_019f3781-6ce4-7bbf-8a5e-7f7e36876d55" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RestructuringPlanAxis_019f3781-6ce4-7f83-a4d8-1ecb7da60912" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_RestructuringPlanAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfRestructuringAndRelatedCostsTable_019f3781-6ce4-79b9-af26-804fdb4f2aa3" xlink:to="loc_us-gaap_RestructuringPlanAxis_019f3781-6ce4-7f83-a4d8-1ecb7da60912" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RestructuringPlanDomain_019f3781-6ce4-7f83-a4d8-1ecb7da60912_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_RestructuringPlanDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_RestructuringPlanAxis_019f3781-6ce4-7f83-a4d8-1ecb7da60912" xlink:to="loc_us-gaap_RestructuringPlanDomain_019f3781-6ce4-7f83-a4d8-1ecb7da60912_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RestructuringPlanDomain_019f3781-6ce4-7128-ad16-e418ce32957a" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_RestructuringPlanDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_RestructuringPlanAxis_019f3781-6ce4-7f83-a4d8-1ecb7da60912" xlink:to="loc_us-gaap_RestructuringPlanDomain_019f3781-6ce4-7128-ad16-e418ce32957a" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_leg_A2024RestructuringPlanMember_019f3781-6ce4-7bab-ae6e-29ca994b1e2f" xlink:href="leg-20260630.xsd#leg_A2024RestructuringPlanMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RestructuringPlanDomain_019f3781-6ce4-7128-ad16-e418ce32957a" xlink:to="loc_leg_A2024RestructuringPlanMember_019f3781-6ce4-7bab-ae6e-29ca994b1e2f" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_leg_A2026RestructuringPlanMember_019f3781-6ce4-7e1f-b296-0a4ace352028" xlink:href="leg-20260630.xsd#leg_A2026RestructuringPlanMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RestructuringPlanDomain_019f3781-6ce4-7128-ad16-e418ce32957a" xlink:to="loc_leg_A2026RestructuringPlanMember_019f3781-6ce4-7e1f-b296-0a4ace352028" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RestructuringAndRelatedCostExpectedCost1_019f3781-6ce4-77cb-9180-c265ec3765f2" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_RestructuringAndRelatedCostExpectedCost1"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RestructuringCostAndReserveLineItems_019f3781-6ce4-7b54-b910-99da4223c979" xlink:to="loc_us-gaap_RestructuringAndRelatedCostExpectedCost1_019f3781-6ce4-77cb-9180-c265ec3765f2" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RestructuringAndRelatedCostIncurredCost_019f3781-6ce4-7d5d-a33b-275f840047b7" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_RestructuringAndRelatedCostIncurredCost"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RestructuringCostAndReserveLineItems_019f3781-6ce4-7b54-b910-99da4223c979" xlink:to="loc_us-gaap_RestructuringAndRelatedCostIncurredCost_019f3781-6ce4-7d5d-a33b-275f840047b7" xlink:type="arc" order="1"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.leggett.com/role/RestructuringandRelatedActivitiesScheduleofRestructuringRelatedCostsDetails" xlink:type="simple" xlink:href="leg-20260630.xsd#RestructuringandRelatedActivitiesScheduleofRestructuringRelatedCostsDetails"/>
  <link:definitionLink xlink:role="http://www.leggett.com/role/RestructuringandRelatedActivitiesScheduleofRestructuringRelatedCostsDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RestructuringCostAndReserveLineItems_019f3781-6ce4-7bc4-bf87-1e1bb55bd094" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_RestructuringCostAndReserveLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfRestructuringAndRelatedCostsTable_019f3781-6ce4-7401-9eaa-d7064c244bbc" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ScheduleOfRestructuringAndRelatedCostsTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_RestructuringCostAndReserveLineItems_019f3781-6ce4-7bc4-bf87-1e1bb55bd094" xlink:to="loc_us-gaap_ScheduleOfRestructuringAndRelatedCostsTable_019f3781-6ce4-7401-9eaa-d7064c244bbc" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementOfIncomeLocationBalanceAxis_019f3781-6ce4-7ae1-a1a6-863f5071bc44" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_StatementOfIncomeLocationBalanceAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfRestructuringAndRelatedCostsTable_019f3781-6ce4-7401-9eaa-d7064c244bbc" xlink:to="loc_us-gaap_StatementOfIncomeLocationBalanceAxis_019f3781-6ce4-7ae1-a1a6-863f5071bc44" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RestructuringCostAndReserveAxis_019f3781-6ce4-7c6c-aaaa-487abcc68349" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_RestructuringCostAndReserveAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfRestructuringAndRelatedCostsTable_019f3781-6ce4-7401-9eaa-d7064c244bbc" xlink:to="loc_us-gaap_RestructuringCostAndReserveAxis_019f3781-6ce4-7c6c-aaaa-487abcc68349" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_TypeOfRestructuringDomain_019f3781-6ce4-7c6c-aaaa-487abcc68349_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_TypeOfRestructuringDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_RestructuringCostAndReserveAxis_019f3781-6ce4-7c6c-aaaa-487abcc68349" xlink:to="loc_us-gaap_TypeOfRestructuringDomain_019f3781-6ce4-7c6c-aaaa-487abcc68349_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_TypeOfRestructuringDomain_019f3781-6ce4-7021-a1ef-377a8d8cee5f" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_TypeOfRestructuringDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_RestructuringCostAndReserveAxis_019f3781-6ce4-7c6c-aaaa-487abcc68349" xlink:to="loc_us-gaap_TypeOfRestructuringDomain_019f3781-6ce4-7021-a1ef-377a8d8cee5f" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_leg_TotalRestructuringRelatedCostsMember_019f3781-6ce4-7516-8494-cd0ccb5c2614" xlink:href="leg-20260630.xsd#leg_TotalRestructuringRelatedCostsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_TypeOfRestructuringDomain_019f3781-6ce4-7021-a1ef-377a8d8cee5f" xlink:to="loc_leg_TotalRestructuringRelatedCostsMember_019f3781-6ce4-7516-8494-cd0ccb5c2614" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_leg_InventoryObsolescenceAndOtherMember_019f3781-6ce4-7bd5-98d4-92129c277d3e" xlink:href="leg-20260630.xsd#leg_InventoryObsolescenceAndOtherMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_leg_TotalRestructuringRelatedCostsMember_019f3781-6ce4-7516-8494-cd0ccb5c2614" xlink:to="loc_leg_InventoryObsolescenceAndOtherMember_019f3781-6ce4-7bd5-98d4-92129c277d3e" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_leg_ProfessionalServicesAndOtherMember_019f3781-6ce4-7a46-84a5-f1565d91ad26" xlink:href="leg-20260630.xsd#leg_ProfessionalServicesAndOtherMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_leg_TotalRestructuringRelatedCostsMember_019f3781-6ce4-7516-8494-cd0ccb5c2614" xlink:to="loc_leg_ProfessionalServicesAndOtherMember_019f3781-6ce4-7a46-84a5-f1565d91ad26" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_leg_DisposalOfPropertyPlantAndEquipmentMember_019f3781-6ce4-7b4b-ae4f-f031528276d0" xlink:href="leg-20260630.xsd#leg_DisposalOfPropertyPlantAndEquipmentMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_leg_TotalRestructuringRelatedCostsMember_019f3781-6ce4-7516-8494-cd0ccb5c2614" xlink:to="loc_leg_DisposalOfPropertyPlantAndEquipmentMember_019f3781-6ce4-7b4b-ae4f-f031528276d0" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherRestructuringMember_019f3781-6ce4-7b9c-a60c-fe8dfdb1b5ec" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_OtherRestructuringMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_TypeOfRestructuringDomain_019f3781-6ce4-7021-a1ef-377a8d8cee5f" xlink:to="loc_us-gaap_OtherRestructuringMember_019f3781-6ce4-7b9c-a60c-fe8dfdb1b5ec" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RestructuringPlanAxis_019f3781-6ce4-76af-a3d7-b455cb9ac39b" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_RestructuringPlanAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfRestructuringAndRelatedCostsTable_019f3781-6ce4-7401-9eaa-d7064c244bbc" xlink:to="loc_us-gaap_RestructuringPlanAxis_019f3781-6ce4-76af-a3d7-b455cb9ac39b" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RestructuringPlanDomain_019f3781-6ce4-76af-a3d7-b455cb9ac39b_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_RestructuringPlanDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_RestructuringPlanAxis_019f3781-6ce4-76af-a3d7-b455cb9ac39b" xlink:to="loc_us-gaap_RestructuringPlanDomain_019f3781-6ce4-76af-a3d7-b455cb9ac39b_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RestructuringPlanDomain_019f3781-6ce4-711c-9d55-71f73e147385" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_RestructuringPlanDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_RestructuringPlanAxis_019f3781-6ce4-76af-a3d7-b455cb9ac39b" xlink:to="loc_us-gaap_RestructuringPlanDomain_019f3781-6ce4-711c-9d55-71f73e147385" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_leg_A2024RestructuringPlanMember_019f3781-6ce4-71c1-915e-eced4fbc632a" xlink:href="leg-20260630.xsd#leg_A2024RestructuringPlanMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RestructuringPlanDomain_019f3781-6ce4-711c-9d55-71f73e147385" xlink:to="loc_leg_A2024RestructuringPlanMember_019f3781-6ce4-71c1-915e-eced4fbc632a" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_leg_A2026RestructuringPlanMember_019f3781-6ce4-7c3a-b681-ef7854397682" xlink:href="leg-20260630.xsd#leg_A2026RestructuringPlanMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RestructuringPlanDomain_019f3781-6ce4-711c-9d55-71f73e147385" xlink:to="loc_leg_A2026RestructuringPlanMember_019f3781-6ce4-7c3a-b681-ef7854397682" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_leg_OtherRestructuringActivityMember_019f3781-6ce4-7ab1-a304-fd0ece988cc1" xlink:href="leg-20260630.xsd#leg_OtherRestructuringActivityMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RestructuringPlanDomain_019f3781-6ce4-711c-9d55-71f73e147385" xlink:to="loc_leg_OtherRestructuringActivityMember_019f3781-6ce4-7ab1-a304-fd0ece988cc1" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RestructuringCharges_019f3781-6ce4-7683-a2dd-d3ae142fd5ed" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_RestructuringCharges"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RestructuringCostAndReserveLineItems_019f3781-6ce4-7bc4-bf87-1e1bb55bd094" xlink:to="loc_us-gaap_RestructuringCharges_019f3781-6ce4-7683-a2dd-d3ae142fd5ed" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RestructuringAndRelatedCostIncurredCost_019f3781-6ce4-75eb-a746-17f4e2713164" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_RestructuringAndRelatedCostIncurredCost"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RestructuringCostAndReserveLineItems_019f3781-6ce4-7bc4-bf87-1e1bb55bd094" xlink:to="loc_us-gaap_RestructuringAndRelatedCostIncurredCost_019f3781-6ce4-75eb-a746-17f4e2713164" xlink:type="arc" order="1"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.leggett.com/role/RestructuringandRelatedActivitiesScheduleofRestructuringRelatedCostsDetails_1" xlink:type="simple" xlink:href="leg-20260630.xsd#RestructuringandRelatedActivitiesScheduleofRestructuringRelatedCostsDetails_1"/>
  <link:definitionLink xlink:role="http://www.leggett.com/role/RestructuringandRelatedActivitiesScheduleofRestructuringRelatedCostsDetails_1" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RestructuringCostAndReserveLineItems_019f3781-6ce4-7bc4-bf87-1e1bb55bd094" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_RestructuringCostAndReserveLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfRestructuringAndRelatedCostsTable_019f3781-6ce4-7401-9eaa-d7064c244bbc" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ScheduleOfRestructuringAndRelatedCostsTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_RestructuringCostAndReserveLineItems_019f3781-6ce4-7bc4-bf87-1e1bb55bd094" xlink:to="loc_us-gaap_ScheduleOfRestructuringAndRelatedCostsTable_019f3781-6ce4-7401-9eaa-d7064c244bbc" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RestructuringCostAndReserveAxis_019f3781-6ce4-7c6c-aaaa-487abcc68349" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_RestructuringCostAndReserveAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfRestructuringAndRelatedCostsTable_019f3781-6ce4-7401-9eaa-d7064c244bbc" xlink:to="loc_us-gaap_RestructuringCostAndReserveAxis_019f3781-6ce4-7c6c-aaaa-487abcc68349" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_TypeOfRestructuringDomain_019f3781-6ce4-7c6c-aaaa-487abcc68349_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_TypeOfRestructuringDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_RestructuringCostAndReserveAxis_019f3781-6ce4-7c6c-aaaa-487abcc68349" xlink:to="loc_us-gaap_TypeOfRestructuringDomain_019f3781-6ce4-7c6c-aaaa-487abcc68349_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_TypeOfRestructuringDomain_019f3781-6ce4-7021-a1ef-377a8d8cee5f" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_TypeOfRestructuringDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_RestructuringCostAndReserveAxis_019f3781-6ce4-7c6c-aaaa-487abcc68349" xlink:to="loc_us-gaap_TypeOfRestructuringDomain_019f3781-6ce4-7021-a1ef-377a8d8cee5f" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_leg_TotalRestructuringRelatedCostsMember_019f3781-6ce4-7516-8494-cd0ccb5c2614" xlink:href="leg-20260630.xsd#leg_TotalRestructuringRelatedCostsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_TypeOfRestructuringDomain_019f3781-6ce4-7021-a1ef-377a8d8cee5f" xlink:to="loc_leg_TotalRestructuringRelatedCostsMember_019f3781-6ce4-7516-8494-cd0ccb5c2614" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_leg_InventoryObsolescenceAndOtherMember_019f3781-6ce4-7bd5-98d4-92129c277d3e" xlink:href="leg-20260630.xsd#leg_InventoryObsolescenceAndOtherMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_leg_TotalRestructuringRelatedCostsMember_019f3781-6ce4-7516-8494-cd0ccb5c2614" xlink:to="loc_leg_InventoryObsolescenceAndOtherMember_019f3781-6ce4-7bd5-98d4-92129c277d3e" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_leg_ProfessionalServicesAndOtherMember_019f3781-6ce4-7a46-84a5-f1565d91ad26" xlink:href="leg-20260630.xsd#leg_ProfessionalServicesAndOtherMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_leg_TotalRestructuringRelatedCostsMember_019f3781-6ce4-7516-8494-cd0ccb5c2614" xlink:to="loc_leg_ProfessionalServicesAndOtherMember_019f3781-6ce4-7a46-84a5-f1565d91ad26" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_leg_DisposalOfPropertyPlantAndEquipmentMember_019f3781-6ce4-7b4b-ae4f-f031528276d0" xlink:href="leg-20260630.xsd#leg_DisposalOfPropertyPlantAndEquipmentMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_leg_TotalRestructuringRelatedCostsMember_019f3781-6ce4-7516-8494-cd0ccb5c2614" xlink:to="loc_leg_DisposalOfPropertyPlantAndEquipmentMember_019f3781-6ce4-7b4b-ae4f-f031528276d0" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherRestructuringMember_019f3781-6ce4-7b9c-a60c-fe8dfdb1b5ec" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_OtherRestructuringMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_TypeOfRestructuringDomain_019f3781-6ce4-7021-a1ef-377a8d8cee5f" xlink:to="loc_us-gaap_OtherRestructuringMember_019f3781-6ce4-7b9c-a60c-fe8dfdb1b5ec" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RestructuringPlanAxis_019f3781-6ce4-76af-a3d7-b455cb9ac39b" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_RestructuringPlanAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfRestructuringAndRelatedCostsTable_019f3781-6ce4-7401-9eaa-d7064c244bbc" xlink:to="loc_us-gaap_RestructuringPlanAxis_019f3781-6ce4-76af-a3d7-b455cb9ac39b" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RestructuringPlanDomain_019f3781-6ce4-76af-a3d7-b455cb9ac39b_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_RestructuringPlanDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_RestructuringPlanAxis_019f3781-6ce4-76af-a3d7-b455cb9ac39b" xlink:to="loc_us-gaap_RestructuringPlanDomain_019f3781-6ce4-76af-a3d7-b455cb9ac39b_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RestructuringPlanDomain_019f3781-6ce4-711c-9d55-71f73e147385" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_RestructuringPlanDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_RestructuringPlanAxis_019f3781-6ce4-76af-a3d7-b455cb9ac39b" xlink:to="loc_us-gaap_RestructuringPlanDomain_019f3781-6ce4-711c-9d55-71f73e147385" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_leg_A2024RestructuringPlanMember_019f3781-6ce4-71c1-915e-eced4fbc632a" xlink:href="leg-20260630.xsd#leg_A2024RestructuringPlanMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RestructuringPlanDomain_019f3781-6ce4-711c-9d55-71f73e147385" xlink:to="loc_leg_A2024RestructuringPlanMember_019f3781-6ce4-71c1-915e-eced4fbc632a" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_leg_A2026RestructuringPlanMember_019f3781-6ce4-7c3a-b681-ef7854397682" xlink:href="leg-20260630.xsd#leg_A2026RestructuringPlanMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RestructuringPlanDomain_019f3781-6ce4-711c-9d55-71f73e147385" xlink:to="loc_leg_A2026RestructuringPlanMember_019f3781-6ce4-7c3a-b681-ef7854397682" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_leg_OtherRestructuringActivityMember_019f3781-6ce4-7ab1-a304-fd0ece988cc1" xlink:href="leg-20260630.xsd#leg_OtherRestructuringActivityMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RestructuringPlanDomain_019f3781-6ce4-711c-9d55-71f73e147385" xlink:to="loc_leg_OtherRestructuringActivityMember_019f3781-6ce4-7ab1-a304-fd0ece988cc1" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RestructuringCharges_019f3781-6ce4-7683-a2dd-d3ae142fd5ed" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_RestructuringCharges"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RestructuringCostAndReserveLineItems_019f3781-6ce4-7bc4-bf87-1e1bb55bd094" xlink:to="loc_us-gaap_RestructuringCharges_019f3781-6ce4-7683-a2dd-d3ae142fd5ed" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RestructuringAndRelatedCostIncurredCost_019f3781-6ce4-75eb-a746-17f4e2713164" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_RestructuringAndRelatedCostIncurredCost"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RestructuringCostAndReserveLineItems_019f3781-6ce4-7bc4-bf87-1e1bb55bd094" xlink:to="loc_us-gaap_RestructuringAndRelatedCostIncurredCost_019f3781-6ce4-75eb-a746-17f4e2713164" xlink:type="arc" order="1"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.leggett.com/role/RestructuringandRelatedActivitiesScheduleofRestructuringRelatedCostsbySegmentDetails" xlink:type="simple" xlink:href="leg-20260630.xsd#RestructuringandRelatedActivitiesScheduleofRestructuringRelatedCostsbySegmentDetails"/>
  <link:definitionLink xlink:role="http://www.leggett.com/role/RestructuringandRelatedActivitiesScheduleofRestructuringRelatedCostsbySegmentDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RestructuringCostAndReserveLineItems_019f3781-6ce5-7c97-944a-776cdb4c39d7" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_RestructuringCostAndReserveLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfRestructuringAndRelatedCostsTable_019f3781-6ce5-74a8-8953-639bac3651a7" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ScheduleOfRestructuringAndRelatedCostsTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_RestructuringCostAndReserveLineItems_019f3781-6ce5-7c97-944a-776cdb4c39d7" xlink:to="loc_us-gaap_ScheduleOfRestructuringAndRelatedCostsTable_019f3781-6ce5-74a8-8953-639bac3651a7" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RestructuringCostAndReserveAxis_019f3781-6ce5-7131-aef3-58d7e5a0e3eb" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_RestructuringCostAndReserveAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfRestructuringAndRelatedCostsTable_019f3781-6ce5-74a8-8953-639bac3651a7" xlink:to="loc_us-gaap_RestructuringCostAndReserveAxis_019f3781-6ce5-7131-aef3-58d7e5a0e3eb" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_TypeOfRestructuringDomain_019f3781-6ce5-7131-aef3-58d7e5a0e3eb_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_TypeOfRestructuringDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_RestructuringCostAndReserveAxis_019f3781-6ce5-7131-aef3-58d7e5a0e3eb" xlink:to="loc_us-gaap_TypeOfRestructuringDomain_019f3781-6ce5-7131-aef3-58d7e5a0e3eb_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_TypeOfRestructuringDomain_019f3781-6ce5-72ca-b559-f4aebd751495" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_TypeOfRestructuringDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_RestructuringCostAndReserveAxis_019f3781-6ce5-7131-aef3-58d7e5a0e3eb" xlink:to="loc_us-gaap_TypeOfRestructuringDomain_019f3781-6ce5-72ca-b559-f4aebd751495" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherRestructuringMember_019f3781-6ce5-748c-9953-b18cf2e9583d" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_OtherRestructuringMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_TypeOfRestructuringDomain_019f3781-6ce5-72ca-b559-f4aebd751495" xlink:to="loc_us-gaap_OtherRestructuringMember_019f3781-6ce5-748c-9953-b18cf2e9583d" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementBusinessSegmentsAxis_019f3781-6ce5-7ec1-8922-d66824b35dee" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_StatementBusinessSegmentsAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfRestructuringAndRelatedCostsTable_019f3781-6ce5-74a8-8953-639bac3651a7" xlink:to="loc_us-gaap_StatementBusinessSegmentsAxis_019f3781-6ce5-7ec1-8922-d66824b35dee" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SegmentDomain_019f3781-6ce5-7ec1-8922-d66824b35dee_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_SegmentDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_StatementBusinessSegmentsAxis_019f3781-6ce5-7ec1-8922-d66824b35dee" xlink:to="loc_us-gaap_SegmentDomain_019f3781-6ce5-7ec1-8922-d66824b35dee_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SegmentDomain_019f3781-6ce5-7a85-8ec7-2859e044daca" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_SegmentDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_StatementBusinessSegmentsAxis_019f3781-6ce5-7ec1-8922-d66824b35dee" xlink:to="loc_us-gaap_SegmentDomain_019f3781-6ce5-7a85-8ec7-2859e044daca" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_leg_BeddingProductsMember_019f3781-6ce5-75f5-8426-d697fb55c515" xlink:href="leg-20260630.xsd#leg_BeddingProductsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentDomain_019f3781-6ce5-7a85-8ec7-2859e044daca" xlink:to="loc_leg_BeddingProductsMember_019f3781-6ce5-75f5-8426-d697fb55c515" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_leg_SpecializedProductsMember_019f3781-6ce5-7dea-81b1-f1b7de3cc542" xlink:href="leg-20260630.xsd#leg_SpecializedProductsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentDomain_019f3781-6ce5-7a85-8ec7-2859e044daca" xlink:to="loc_leg_SpecializedProductsMember_019f3781-6ce5-7dea-81b1-f1b7de3cc542" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_leg_FurnitureFlooringAndTextileProductsMember_019f3781-6ce5-7fad-a203-886a0e0df4ad" xlink:href="leg-20260630.xsd#leg_FurnitureFlooringAndTextileProductsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentDomain_019f3781-6ce5-7a85-8ec7-2859e044daca" xlink:to="loc_leg_FurnitureFlooringAndTextileProductsMember_019f3781-6ce5-7fad-a203-886a0e0df4ad" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RestructuringPlanAxis_019f3781-6ce5-7511-9e81-2e6b23578694" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_RestructuringPlanAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfRestructuringAndRelatedCostsTable_019f3781-6ce5-74a8-8953-639bac3651a7" xlink:to="loc_us-gaap_RestructuringPlanAxis_019f3781-6ce5-7511-9e81-2e6b23578694" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RestructuringPlanDomain_019f3781-6ce5-7511-9e81-2e6b23578694_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_RestructuringPlanDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_RestructuringPlanAxis_019f3781-6ce5-7511-9e81-2e6b23578694" xlink:to="loc_us-gaap_RestructuringPlanDomain_019f3781-6ce5-7511-9e81-2e6b23578694_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RestructuringPlanDomain_019f3781-6ce5-7b27-9165-8ebfbb545698" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_RestructuringPlanDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_RestructuringPlanAxis_019f3781-6ce5-7511-9e81-2e6b23578694" xlink:to="loc_us-gaap_RestructuringPlanDomain_019f3781-6ce5-7b27-9165-8ebfbb545698" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_leg_A2024RestructuringPlanMember_019f3781-6ce5-74e3-bd6b-2aeb34334eec" xlink:href="leg-20260630.xsd#leg_A2024RestructuringPlanMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RestructuringPlanDomain_019f3781-6ce5-7b27-9165-8ebfbb545698" xlink:to="loc_leg_A2024RestructuringPlanMember_019f3781-6ce5-74e3-bd6b-2aeb34334eec" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_leg_A2026RestructuringPlanMember_019f3781-6ce5-710c-aaee-7aab488602b7" xlink:href="leg-20260630.xsd#leg_A2026RestructuringPlanMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RestructuringPlanDomain_019f3781-6ce5-7b27-9165-8ebfbb545698" xlink:to="loc_leg_A2026RestructuringPlanMember_019f3781-6ce5-710c-aaee-7aab488602b7" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RestructuringAndRelatedCostIncurredCost_019f3781-6ce5-753a-9976-17948e62a761" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_RestructuringAndRelatedCostIncurredCost"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RestructuringCostAndReserveLineItems_019f3781-6ce5-7c97-944a-776cdb4c39d7" xlink:to="loc_us-gaap_RestructuringAndRelatedCostIncurredCost_019f3781-6ce5-753a-9976-17948e62a761" xlink:type="arc" order="0"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.leggett.com/role/GoodwillImpairmentTestingDetails" xlink:type="simple" xlink:href="leg-20260630.xsd#GoodwillImpairmentTestingDetails"/>
  <link:definitionLink xlink:role="http://www.leggett.com/role/GoodwillImpairmentTestingDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_GoodwillLineItems_019f3c45-21cf-7337-bedf-ff5b73c72ec0" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_GoodwillLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfGoodwillTable_019f3c45-21cf-75a8-bd42-ffff64d0958f" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ScheduleOfGoodwillTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_GoodwillLineItems_019f3c45-21cf-7337-bedf-ff5b73c72ec0" xlink:to="loc_us-gaap_ScheduleOfGoodwillTable_019f3c45-21cf-75a8-bd42-ffff64d0958f" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_leg_PercentageRangeAxis_019f3c45-21cf-7adc-8f13-885043d01dee" xlink:href="leg-20260630.xsd#leg_PercentageRangeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfGoodwillTable_019f3c45-21cf-75a8-bd42-ffff64d0958f" xlink:to="loc_leg_PercentageRangeAxis_019f3c45-21cf-7adc-8f13-885043d01dee" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_leg_PercentageRangeDomain_019f3c45-21cf-7adc-8f13-885043d01dee_default" xlink:href="leg-20260630.xsd#leg_PercentageRangeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_leg_PercentageRangeAxis_019f3c45-21cf-7adc-8f13-885043d01dee" xlink:to="loc_leg_PercentageRangeDomain_019f3c45-21cf-7adc-8f13-885043d01dee_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_leg_PercentageRangeDomain_019f3c45-21cf-762d-9d43-5cfdb67e8b0a" xlink:href="leg-20260630.xsd#leg_PercentageRangeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_leg_PercentageRangeAxis_019f3c45-21cf-7adc-8f13-885043d01dee" xlink:to="loc_leg_PercentageRangeDomain_019f3c45-21cf-762d-9d43-5cfdb67e8b0a" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_leg_LessThan25PercentMember_019fab4c-b047-7c94-8a43-5b8a133718bc" xlink:href="leg-20260630.xsd#leg_LessThan25PercentMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_leg_PercentageRangeDomain_019f3c45-21cf-762d-9d43-5cfdb67e8b0a" xlink:to="loc_leg_LessThan25PercentMember_019fab4c-b047-7c94-8a43-5b8a133718bc" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_leg_A25To50PercentMember_019fab4c-632b-7cd4-a975-f191cfdfaaf3" xlink:href="leg-20260630.xsd#leg_A25To50PercentMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_leg_PercentageRangeDomain_019f3c45-21cf-762d-9d43-5cfdb67e8b0a" xlink:to="loc_leg_A25To50PercentMember_019fab4c-632b-7cd4-a975-f191cfdfaaf3" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_leg_LessThan50PercentMember_019f3c45-21cf-7558-978a-234835d73acc" xlink:href="leg-20260630.xsd#leg_LessThan50PercentMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_leg_PercentageRangeDomain_019f3c45-21cf-762d-9d43-5cfdb67e8b0a" xlink:to="loc_leg_LessThan50PercentMember_019f3c45-21cf-7558-978a-234835d73acc" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_leg_A51To100PercentMember_019f3c45-21cf-7c15-b70c-d4c519077d06" xlink:href="leg-20260630.xsd#leg_A51To100PercentMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_leg_PercentageRangeDomain_019f3c45-21cf-762d-9d43-5cfdb67e8b0a" xlink:to="loc_leg_A51To100PercentMember_019f3c45-21cf-7c15-b70c-d4c519077d06" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RangeAxis_019f3c45-21cf-73bc-b75b-90ad5e1aa2c2" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_RangeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfGoodwillTable_019f3c45-21cf-75a8-bd42-ffff64d0958f" xlink:to="loc_srt_RangeAxis_019f3c45-21cf-73bc-b75b-90ad5e1aa2c2" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RangeMember_019f3c45-21cf-73bc-b75b-90ad5e1aa2c2_default" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_RangeMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_RangeAxis_019f3c45-21cf-73bc-b75b-90ad5e1aa2c2" xlink:to="loc_srt_RangeMember_019f3c45-21cf-73bc-b75b-90ad5e1aa2c2_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RangeMember_019f3c45-21cf-7aeb-b30c-4959a8329d2e" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_RangeMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_RangeAxis_019f3c45-21cf-73bc-b75b-90ad5e1aa2c2" xlink:to="loc_srt_RangeMember_019f3c45-21cf-7aeb-b30c-4959a8329d2e" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_MinimumMember_019f3c45-21cf-7f86-a2d7-940ac0800a26" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_MinimumMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RangeMember_019f3c45-21cf-7aeb-b30c-4959a8329d2e" xlink:to="loc_srt_MinimumMember_019f3c45-21cf-7f86-a2d7-940ac0800a26" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_MaximumMember_019f3c45-21cf-7f1d-8df6-19bf6593d529" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_MaximumMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RangeMember_019f3c45-21cf-7aeb-b30c-4959a8329d2e" xlink:to="loc_srt_MaximumMember_019f3c45-21cf-7f1d-8df6-19bf6593d529" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ReportingUnitAxis_019f3c46-4dd5-7abd-b944-23b4e6fb3877" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ReportingUnitAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfGoodwillTable_019f3c45-21cf-75a8-bd42-ffff64d0958f" xlink:to="loc_us-gaap_ReportingUnitAxis_019f3c46-4dd5-7abd-b944-23b4e6fb3877" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ReportingUnitDomain_019f3c46-4dd5-7abd-b944-23b4e6fb3877_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ReportingUnitDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_ReportingUnitAxis_019f3c46-4dd5-7abd-b944-23b4e6fb3877" xlink:to="loc_us-gaap_ReportingUnitDomain_019f3c46-4dd5-7abd-b944-23b4e6fb3877_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ReportingUnitDomain_019f3c46-4dd5-7977-b365-8d95776f24df" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ReportingUnitDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_ReportingUnitAxis_019f3c46-4dd5-7abd-b944-23b4e6fb3877" xlink:to="loc_us-gaap_ReportingUnitDomain_019f3c46-4dd5-7977-b365-8d95776f24df" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_leg_BeddingMember_019f3c46-4dd6-75b4-92ec-8b36de9584a9" xlink:href="leg-20260630.xsd#leg_BeddingMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ReportingUnitDomain_019f3c46-4dd5-7977-b365-8d95776f24df" xlink:to="loc_leg_BeddingMember_019f3c46-4dd6-75b4-92ec-8b36de9584a9" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_leg_HomeFurnitureMember_019f3c46-4dd6-797b-8005-3f121c05ab9e" xlink:href="leg-20260630.xsd#leg_HomeFurnitureMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ReportingUnitDomain_019f3c46-4dd5-7977-b365-8d95776f24df" xlink:to="loc_leg_HomeFurnitureMember_019f3c46-4dd6-797b-8005-3f121c05ab9e" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_leg_WorkFurnitureMember_019f3c46-4dd6-7319-8244-903a492b0260" xlink:href="leg-20260630.xsd#leg_WorkFurnitureMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ReportingUnitDomain_019f3c46-4dd5-7977-b365-8d95776f24df" xlink:to="loc_leg_WorkFurnitureMember_019f3c46-4dd6-7319-8244-903a492b0260" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_leg_PercentageOfFairValueInExcessOfCarryingPercentageOfFairValueInExcessOfCarryingValue_019f3c45-21cf-7814-ac03-71d1f2e0d12c" xlink:href="leg-20260630.xsd#leg_PercentageOfFairValueInExcessOfCarryingPercentageOfFairValueInExcessOfCarryingValue"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_GoodwillLineItems_019f3c45-21cf-7337-bedf-ff5b73c72ec0" xlink:to="loc_leg_PercentageOfFairValueInExcessOfCarryingPercentageOfFairValueInExcessOfCarryingValue_019f3c45-21cf-7814-ac03-71d1f2e0d12c" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_GoodwillFairValueDisclosure_019f3c45-21cf-78c0-b0ed-7e1c68bdc7bb" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_GoodwillFairValueDisclosure"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_GoodwillLineItems_019f3c45-21cf-7337-bedf-ff5b73c72ec0" xlink:to="loc_us-gaap_GoodwillFairValueDisclosure_019f3c45-21cf-78c0-b0ed-7e1c68bdc7bb" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_leg_CompoundAnnualGrowthRateCAGRForSales_019f3c45-21cf-730e-a77d-d8b730fd60ee" xlink:href="leg-20260630.xsd#leg_CompoundAnnualGrowthRateCAGRForSales"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_GoodwillLineItems_019f3c45-21cf-7337-bedf-ff5b73c72ec0" xlink:to="loc_leg_CompoundAnnualGrowthRateCAGRForSales_019f3c45-21cf-730e-a77d-d8b730fd60ee" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_leg_FairValueInputsLongTermGrowthRateDebtFreeCashFlow_019f3c45-21cf-7950-b112-5d1e84047533" xlink:href="leg-20260630.xsd#leg_FairValueInputsLongTermGrowthRateDebtFreeCashFlow"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_GoodwillLineItems_019f3c45-21cf-7337-bedf-ff5b73c72ec0" xlink:to="loc_leg_FairValueInputsLongTermGrowthRateDebtFreeCashFlow_019f3c45-21cf-7950-b112-5d1e84047533" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_leg_GoodwillImpairmentInputsDiscountRate_019f3c45-21cf-713e-a07c-3e0169ac9fc5" xlink:href="leg-20260630.xsd#leg_GoodwillImpairmentInputsDiscountRate"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_GoodwillLineItems_019f3c45-21cf-7337-bedf-ff5b73c72ec0" xlink:to="loc_leg_GoodwillImpairmentInputsDiscountRate_019f3c45-21cf-713e-a07c-3e0169ac9fc5" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ReportingUnitPercentageOfFairValueInExcessOfCarryingAmount_019f3c46-4dd6-7f9c-9d59-0f5436b11af1" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ReportingUnitPercentageOfFairValueInExcessOfCarryingAmount"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_GoodwillLineItems_019f3c45-21cf-7337-bedf-ff5b73c72ec0" xlink:to="loc_us-gaap_ReportingUnitPercentageOfFairValueInExcessOfCarryingAmount_019f3c46-4dd6-7f9c-9d59-0f5436b11af1" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_leg_GoodwillImpairmentTestingHypotheticalChangeInDiscountRate_019fc6cf-09d8-7919-bbc6-bf326d30958c" xlink:href="leg-20260630.xsd#leg_GoodwillImpairmentTestingHypotheticalChangeInDiscountRate"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_GoodwillLineItems_019f3c45-21cf-7337-bedf-ff5b73c72ec0" xlink:to="loc_leg_GoodwillImpairmentTestingHypotheticalChangeInDiscountRate_019fc6cf-09d8-7919-bbc6-bf326d30958c" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_GoodwillImpairmentLoss_019fc96d-a63a-780c-9db2-93eaf66340d7" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_GoodwillImpairmentLoss"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_GoodwillLineItems_019f3c45-21cf-7337-bedf-ff5b73c72ec0" xlink:to="loc_us-gaap_GoodwillImpairmentLoss_019fc96d-a63a-780c-9db2-93eaf66340d7" xlink:type="arc" order="7"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.leggett.com/role/AccountsandOtherReceivablesScheduleofComponentsofAccountsandOtherReceivablesDetails" xlink:type="simple" xlink:href="leg-20260630.xsd#AccountsandOtherReceivablesScheduleofComponentsofAccountsandOtherReceivablesDetails"/>
  <link:definitionLink xlink:role="http://www.leggett.com/role/AccountsandOtherReceivablesScheduleofComponentsofAccountsandOtherReceivablesDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccountsNotesAndLoansReceivableLineItems_019f3781-6ce5-728b-9e5e-1ff426f49cab" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AccountsNotesAndLoansReceivableLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfAccountsNotesLoansAndFinancingReceivableTable_019f3781-6ce5-7706-847e-53c4c4b1f3f2" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ScheduleOfAccountsNotesLoansAndFinancingReceivableTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_AccountsNotesAndLoansReceivableLineItems_019f3781-6ce5-728b-9e5e-1ff426f49cab" xlink:to="loc_us-gaap_ScheduleOfAccountsNotesLoansAndFinancingReceivableTable_019f3781-6ce5-7706-847e-53c4c4b1f3f2" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis_019f3781-6ce5-7e72-b2e8-575530dbaf78" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfAccountsNotesLoansAndFinancingReceivableTable_019f3781-6ce5-7706-847e-53c4c4b1f3f2" xlink:to="loc_us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis_019f3781-6ce5-7e72-b2e8-575530dbaf78" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ReceivableTypeDomain_019f3781-6ce5-7e72-b2e8-575530dbaf78_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ReceivableTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis_019f3781-6ce5-7e72-b2e8-575530dbaf78" xlink:to="loc_us-gaap_ReceivableTypeDomain_019f3781-6ce5-7e72-b2e8-575530dbaf78_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ReceivableTypeDomain_019f3781-6ce5-7387-b13c-baec2fdb3146" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ReceivableTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis_019f3781-6ce5-7e72-b2e8-575530dbaf78" xlink:to="loc_us-gaap_ReceivableTypeDomain_019f3781-6ce5-7387-b13c-baec2fdb3146" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_TradeAccountsReceivableMember_019f3781-6ce5-77c7-b209-873193b0bbc1" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_TradeAccountsReceivableMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ReceivableTypeDomain_019f3781-6ce5-7387-b13c-baec2fdb3146" xlink:to="loc_us-gaap_TradeAccountsReceivableMember_019f3781-6ce5-77c7-b209-873193b0bbc1" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_leg_ReceivableGrossCurrentAbstract_019f3781-6ce5-7f5f-bbc1-d47004381255" xlink:href="leg-20260630.xsd#leg_ReceivableGrossCurrentAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AccountsNotesAndLoansReceivableLineItems_019f3781-6ce5-728b-9e5e-1ff426f49cab" xlink:to="loc_leg_ReceivableGrossCurrentAbstract_019f3781-6ce5-7f5f-bbc1-d47004381255" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccountsReceivableGrossCurrent_019f3781-6ce5-7128-86d1-56adee5008e1" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AccountsReceivableGrossCurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_leg_ReceivableGrossCurrentAbstract_019f3781-6ce5-7f5f-bbc1-d47004381255" xlink:to="loc_us-gaap_AccountsReceivableGrossCurrent_019f3781-6ce5-7128-86d1-56adee5008e1" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AllowanceForDoubtfulAccountsReceivableCurrent_019f3781-6ce5-72fa-b9e5-9abf51bb5de1" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AllowanceForDoubtfulAccountsReceivableCurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_leg_ReceivableGrossCurrentAbstract_019f3781-6ce5-7f5f-bbc1-d47004381255" xlink:to="loc_us-gaap_AllowanceForDoubtfulAccountsReceivableCurrent_019f3781-6ce5-72fa-b9e5-9abf51bb5de1" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccountsReceivableNetCurrent_019f3781-6ce5-7b10-abbb-26f603210b98" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AccountsReceivableNetCurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_leg_ReceivableGrossCurrentAbstract_019f3781-6ce5-7f5f-bbc1-d47004381255" xlink:to="loc_us-gaap_AccountsReceivableNetCurrent_019f3781-6ce5-7b10-abbb-26f603210b98" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeTaxesReceivable_019f3781-6ce5-7e28-a665-a59924791700" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_IncomeTaxesReceivable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_leg_ReceivableGrossCurrentAbstract_019f3781-6ce5-7f5f-bbc1-d47004381255" xlink:to="loc_us-gaap_IncomeTaxesReceivable_019f3781-6ce5-7e28-a665-a59924791700" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ValueAddedTaxReceivableCurrent_019f3781-6ce5-73a4-b01d-13ae5a1b4b29" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ValueAddedTaxReceivableCurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_leg_ReceivableGrossCurrentAbstract_019f3781-6ce5-7f5f-bbc1-d47004381255" xlink:to="loc_us-gaap_ValueAddedTaxReceivableCurrent_019f3781-6ce5-73a4-b01d-13ae5a1b4b29" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_leg_RebatesReceivableCurrent_019f3781-6ce5-7ca3-904f-e1a82b77861d" xlink:href="leg-20260630.xsd#leg_RebatesReceivableCurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_leg_ReceivableGrossCurrentAbstract_019f3781-6ce5-7f5f-bbc1-d47004381255" xlink:to="loc_leg_RebatesReceivableCurrent_019f3781-6ce5-7ca3-904f-e1a82b77861d" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_leg_DivestitureProceedsReceivableCurrent_019f3781-6ce5-7191-9bd4-f9b9428c7c58" xlink:href="leg-20260630.xsd#leg_DivestitureProceedsReceivableCurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_leg_ReceivableGrossCurrentAbstract_019f3781-6ce5-7f5f-bbc1-d47004381255" xlink:to="loc_leg_DivestitureProceedsReceivableCurrent_019f3781-6ce5-7191-9bd4-f9b9428c7c58" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_leg_ReceivableForRecoveryOfImportDutiesNetCurrent_019fa584-8065-72a2-8095-7c52522b9d49" xlink:href="leg-20260630.xsd#leg_ReceivableForRecoveryOfImportDutiesNetCurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_leg_ReceivableGrossCurrentAbstract_019f3781-6ce5-7f5f-bbc1-d47004381255" xlink:to="loc_leg_ReceivableForRecoveryOfImportDutiesNetCurrent_019fa584-8065-72a2-8095-7c52522b9d49" xlink:type="arc" order="8"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherReceivablesGrossCurrent_019f3781-6ce5-7337-9af3-f73c4c6d3e0c" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_OtherReceivablesGrossCurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_leg_ReceivableGrossCurrentAbstract_019f3781-6ce5-7f5f-bbc1-d47004381255" xlink:to="loc_us-gaap_OtherReceivablesGrossCurrent_019f3781-6ce5-7337-9af3-f73c4c6d3e0c" xlink:type="arc" order="9"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherReceivablesNetCurrent_019f3781-6ce5-7fa0-b4d4-2bc3ca5d652d" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_OtherReceivablesNetCurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_leg_ReceivableGrossCurrentAbstract_019f3781-6ce5-7f5f-bbc1-d47004381255" xlink:to="loc_us-gaap_OtherReceivablesNetCurrent_019f3781-6ce5-7fa0-b4d4-2bc3ca5d652d" xlink:type="arc" order="10"/>
    <link:loc xlink:type="locator" xlink:label="loc_leg_ReceivablesGrossNoncurrentAbstract_019f3781-6ce5-7461-b346-cd9fa08b865d" xlink:href="leg-20260630.xsd#leg_ReceivablesGrossNoncurrentAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AccountsNotesAndLoansReceivableLineItems_019f3781-6ce5-728b-9e5e-1ff426f49cab" xlink:to="loc_leg_ReceivablesGrossNoncurrentAbstract_019f3781-6ce5-7461-b346-cd9fa08b865d" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccountsReceivableGrossNoncurrent_019f3781-6ce5-7c8c-a0c5-eafaab7b87de" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AccountsReceivableGrossNoncurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_leg_ReceivablesGrossNoncurrentAbstract_019f3781-6ce5-7461-b346-cd9fa08b865d" xlink:to="loc_us-gaap_AccountsReceivableGrossNoncurrent_019f3781-6ce5-7c8c-a0c5-eafaab7b87de" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AllowanceForDoubtfulAccountsReceivableNoncurrent_019f3781-6ce5-7e22-a647-b63e325436e2" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AllowanceForDoubtfulAccountsReceivableNoncurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_leg_ReceivablesGrossNoncurrentAbstract_019f3781-6ce5-7461-b346-cd9fa08b865d" xlink:to="loc_us-gaap_AllowanceForDoubtfulAccountsReceivableNoncurrent_019f3781-6ce5-7e22-a647-b63e325436e2" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccountsReceivableNetNoncurrent_019f3781-6ce5-789e-ace6-12b03da1833d" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AccountsReceivableNetNoncurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_leg_ReceivablesGrossNoncurrentAbstract_019f3781-6ce5-7461-b346-cd9fa08b865d" xlink:to="loc_us-gaap_AccountsReceivableNetNoncurrent_019f3781-6ce5-789e-ace6-12b03da1833d" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeTaxesReceivableNoncurrent_019f3781-6ce5-78ec-b7ff-122412a0b0c6" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_IncomeTaxesReceivableNoncurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_leg_ReceivablesGrossNoncurrentAbstract_019f3781-6ce5-7461-b346-cd9fa08b865d" xlink:to="loc_us-gaap_IncomeTaxesReceivableNoncurrent_019f3781-6ce5-78ec-b7ff-122412a0b0c6" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ValueAddedTaxReceivableNoncurrent_019f3781-6ce5-74f7-9c60-6365ffdf964e" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ValueAddedTaxReceivableNoncurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_leg_ReceivablesGrossNoncurrentAbstract_019f3781-6ce5-7461-b346-cd9fa08b865d" xlink:to="loc_us-gaap_ValueAddedTaxReceivableNoncurrent_019f3781-6ce5-74f7-9c60-6365ffdf964e" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_leg_RebatesReceivableNoncurrent_019f3781-6ce5-7028-90ec-aa2a3817cfc2" xlink:href="leg-20260630.xsd#leg_RebatesReceivableNoncurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_leg_ReceivablesGrossNoncurrentAbstract_019f3781-6ce5-7461-b346-cd9fa08b865d" xlink:to="loc_leg_RebatesReceivableNoncurrent_019f3781-6ce5-7028-90ec-aa2a3817cfc2" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_leg_ReceivableForRecoveryOfImportDutiesNetNoncurrent_019fa46a-8ba8-7a3b-b1d7-08e727cfcc7f" xlink:href="leg-20260630.xsd#leg_ReceivableForRecoveryOfImportDutiesNetNoncurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_leg_ReceivablesGrossNoncurrentAbstract_019f3781-6ce5-7461-b346-cd9fa08b865d" xlink:to="loc_leg_ReceivableForRecoveryOfImportDutiesNetNoncurrent_019fa46a-8ba8-7a3b-b1d7-08e727cfcc7f" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_leg_DivestitureProceedsReceivableNoncurrent_019f3781-6ce5-7f1c-be47-74ac289256c0" xlink:href="leg-20260630.xsd#leg_DivestitureProceedsReceivableNoncurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_leg_ReceivablesGrossNoncurrentAbstract_019f3781-6ce5-7461-b346-cd9fa08b865d" xlink:to="loc_leg_DivestitureProceedsReceivableNoncurrent_019f3781-6ce5-7f1c-be47-74ac289256c0" xlink:type="arc" order="8"/>
    <link:loc xlink:type="locator" xlink:label="loc_leg_OtherReceivablesGrossNoncurrent_019f3781-6ce5-770b-9fc8-4b3e0ceff9ce" xlink:href="leg-20260630.xsd#leg_OtherReceivablesGrossNoncurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_leg_ReceivablesGrossNoncurrentAbstract_019f3781-6ce5-7461-b346-cd9fa08b865d" xlink:to="loc_leg_OtherReceivablesGrossNoncurrent_019f3781-6ce5-770b-9fc8-4b3e0ceff9ce" xlink:type="arc" order="9"/>
    <link:loc xlink:type="locator" xlink:label="loc_leg_OtherReceivablesNetNoncurrent_019f3781-6ce5-75f0-8271-a727d6e9cdef" xlink:href="leg-20260630.xsd#leg_OtherReceivablesNetNoncurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_leg_ReceivablesGrossNoncurrentAbstract_019f3781-6ce5-7461-b346-cd9fa08b865d" xlink:to="loc_leg_OtherReceivablesNetNoncurrent_019f3781-6ce5-75f0-8271-a727d6e9cdef" xlink:type="arc" order="10"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.leggett.com/role/StockBasedCompensationDetails" xlink:type="simple" xlink:href="leg-20260630.xsd#StockBasedCompensationDetails"/>
  <link:definitionLink xlink:role="http://www.leggett.com/role/StockBasedCompensationDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_019f3781-6ce5-7a9d-9062-4a0a218a600f" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_019f3781-6ce5-7daa-a614-17443058991e" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_019f3781-6ce5-7a9d-9062-4a0a218a600f" xlink:to="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_019f3781-6ce5-7daa-a614-17443058991e" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_leg_ShareBasedCompensationArrangementByShareBasedPaymentAwardSettlementTypeAxis_019f3781-6ce5-76db-830e-aa1637ac1ff1" xlink:href="leg-20260630.xsd#leg_ShareBasedCompensationArrangementByShareBasedPaymentAwardSettlementTypeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_019f3781-6ce5-7daa-a614-17443058991e" xlink:to="loc_leg_ShareBasedCompensationArrangementByShareBasedPaymentAwardSettlementTypeAxis_019f3781-6ce5-76db-830e-aa1637ac1ff1" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_leg_ShareBasedCompensationArrangementByShareBasedPaymentAwardSettlementTypeDomain_019f3781-6ce5-76db-830e-aa1637ac1ff1_default" xlink:href="leg-20260630.xsd#leg_ShareBasedCompensationArrangementByShareBasedPaymentAwardSettlementTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_leg_ShareBasedCompensationArrangementByShareBasedPaymentAwardSettlementTypeAxis_019f3781-6ce5-76db-830e-aa1637ac1ff1" xlink:to="loc_leg_ShareBasedCompensationArrangementByShareBasedPaymentAwardSettlementTypeDomain_019f3781-6ce5-76db-830e-aa1637ac1ff1_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_leg_ShareBasedCompensationArrangementByShareBasedPaymentAwardSettlementTypeDomain_019f3781-6ce5-77b6-82b7-3149d86e852d" xlink:href="leg-20260630.xsd#leg_ShareBasedCompensationArrangementByShareBasedPaymentAwardSettlementTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_leg_ShareBasedCompensationArrangementByShareBasedPaymentAwardSettlementTypeAxis_019f3781-6ce5-76db-830e-aa1637ac1ff1" xlink:to="loc_leg_ShareBasedCompensationArrangementByShareBasedPaymentAwardSettlementTypeDomain_019f3781-6ce5-77b6-82b7-3149d86e852d" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_leg_SettledWithStockMember_019f3781-6ce5-73da-b3e7-52b959e82cb6" xlink:href="leg-20260630.xsd#leg_SettledWithStockMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_leg_ShareBasedCompensationArrangementByShareBasedPaymentAwardSettlementTypeDomain_019f3781-6ce5-77b6-82b7-3149d86e852d" xlink:to="loc_leg_SettledWithStockMember_019f3781-6ce5-73da-b3e7-52b959e82cb6" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_leg_SettledWithCashMember_019f3781-6ce5-7ce8-a552-f461aedeb003" xlink:href="leg-20260630.xsd#leg_SettledWithCashMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_leg_ShareBasedCompensationArrangementByShareBasedPaymentAwardSettlementTypeDomain_019f3781-6ce5-77b6-82b7-3149d86e852d" xlink:to="loc_leg_SettledWithCashMember_019f3781-6ce5-7ce8-a552-f461aedeb003" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AwardTypeAxis_019f3781-6ce5-7be7-9216-b4ffcc15997f" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AwardTypeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_019f3781-6ce5-7daa-a614-17443058991e" xlink:to="loc_us-gaap_AwardTypeAxis_019f3781-6ce5-7be7-9216-b4ffcc15997f" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_019f3781-6ce5-7be7-9216-b4ffcc15997f_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_AwardTypeAxis_019f3781-6ce5-7be7-9216-b4ffcc15997f" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_019f3781-6ce5-7be7-9216-b4ffcc15997f_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_019f3781-6ce5-7df8-b8e8-121172b44ed0" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_AwardTypeAxis_019f3781-6ce5-7be7-9216-b4ffcc15997f" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_019f3781-6ce5-7df8-b8e8-121172b44ed0" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RestrictedStockUnitsRSUMember_019f3781-6ce5-788c-8bc4-bfa9d99f0297" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_RestrictedStockUnitsRSUMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_019f3781-6ce5-7df8-b8e8-121172b44ed0" xlink:to="loc_us-gaap_RestrictedStockUnitsRSUMember_019f3781-6ce5-788c-8bc4-bfa9d99f0297" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_leg_OtherStockPlansMember_019f3781-6ce5-7009-bfa8-ab1a7572e4ae" xlink:href="leg-20260630.xsd#leg_OtherStockPlansMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_019f3781-6ce5-7df8-b8e8-121172b44ed0" xlink:to="loc_leg_OtherStockPlansMember_019f3781-6ce5-7009-bfa8-ab1a7572e4ae" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AdjustmentsForNewAccountingPronouncementsAxis_019f3781-6ce5-7987-a58c-1a3f3ca4a849" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AdjustmentsForNewAccountingPronouncementsAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_019f3781-6ce5-7daa-a614-17443058991e" xlink:to="loc_us-gaap_AdjustmentsForNewAccountingPronouncementsAxis_019f3781-6ce5-7987-a58c-1a3f3ca4a849" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_TypeOfAdoptionMember_019f3781-6ce5-7987-a58c-1a3f3ca4a849_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_TypeOfAdoptionMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_AdjustmentsForNewAccountingPronouncementsAxis_019f3781-6ce5-7987-a58c-1a3f3ca4a849" xlink:to="loc_us-gaap_TypeOfAdoptionMember_019f3781-6ce5-7987-a58c-1a3f3ca4a849_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_TypeOfAdoptionMember_019f3781-6ce5-7d6a-9e0c-a627f894f33b" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_TypeOfAdoptionMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_AdjustmentsForNewAccountingPronouncementsAxis_019f3781-6ce5-7987-a58c-1a3f3ca4a849" xlink:to="loc_us-gaap_TypeOfAdoptionMember_019f3781-6ce5-7d6a-9e0c-a627f894f33b" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccountingStandardsUpdate201613Member_019f3781-6ce5-7ef3-880d-30c301bf0016" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AccountingStandardsUpdate201613Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_TypeOfAdoptionMember_019f3781-6ce5-7d6a-9e0c-a627f894f33b" xlink:to="loc_us-gaap_AccountingStandardsUpdate201613Member_019f3781-6ce5-7ef3-880d-30c301bf0016" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AllocatedShareBasedCompensationExpense_019f3781-6ce5-7c76-8774-1789688163f8" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AllocatedShareBasedCompensationExpense"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_019f3781-6ce5-7a9d-9062-4a0a218a600f" xlink:to="loc_us-gaap_AllocatedShareBasedCompensationExpense_019f3781-6ce5-7c76-8774-1789688163f8" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_leg_ShareBasedCompensationEmployeeContributions_019f3781-6ce5-729c-a5f0-a19143ddda38" xlink:href="leg-20260630.xsd#leg_ShareBasedCompensationEmployeeContributions"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_019f3781-6ce5-7a9d-9062-4a0a218a600f" xlink:to="loc_leg_ShareBasedCompensationEmployeeContributions_019f3781-6ce5-729c-a5f0-a19143ddda38" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensation_019f3781-6ce5-71cb-807d-4e9cf0e1118c" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ShareBasedCompensation"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_019f3781-6ce5-7a9d-9062-4a0a218a600f" xlink:to="loc_us-gaap_ShareBasedCompensation_019f3781-6ce5-71cb-807d-4e9cf0e1118c" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense_019f3781-6ce5-74e8-81b5-dbda25b1a101" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_019f3781-6ce5-7a9d-9062-4a0a218a600f" xlink:to="loc_us-gaap_EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense_019f3781-6ce5-74e8-81b5-dbda25b1a101" xlink:type="arc" order="3"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.leggett.com/role/IncomeTaxesDetails" xlink:type="simple" xlink:href="leg-20260630.xsd#IncomeTaxesDetails"/>
  <link:definitionLink xlink:role="http://www.leggett.com/role/IncomeTaxesDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeTaxContingencyLineItems_019f3781-6ce5-7342-ae0f-fa98bd582655" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_IncomeTaxContingencyLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeTaxContingencyTable_019f3781-6ce5-74a5-90d1-59e185c36e27" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_IncomeTaxContingencyTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_IncomeTaxContingencyLineItems_019f3781-6ce5-7342-ae0f-fa98bd582655" xlink:to="loc_us-gaap_IncomeTaxContingencyTable_019f3781-6ce5-74a5-90d1-59e185c36e27" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_StatementGeographicalAxis_019f3781-6ce5-75a8-9c77-b08f2ac7173e" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_StatementGeographicalAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_IncomeTaxContingencyTable_019f3781-6ce5-74a5-90d1-59e185c36e27" xlink:to="loc_srt_StatementGeographicalAxis_019f3781-6ce5-75a8-9c77-b08f2ac7173e" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_SegmentGeographicalDomain_019f3781-6ce5-75a8-9c77-b08f2ac7173e_default" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_SegmentGeographicalDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_StatementGeographicalAxis_019f3781-6ce5-75a8-9c77-b08f2ac7173e" xlink:to="loc_srt_SegmentGeographicalDomain_019f3781-6ce5-75a8-9c77-b08f2ac7173e_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_SegmentGeographicalDomain_019f3781-6ce5-7ffc-8b09-edefa729da76" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_SegmentGeographicalDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_StatementGeographicalAxis_019f3781-6ce5-75a8-9c77-b08f2ac7173e" xlink:to="loc_srt_SegmentGeographicalDomain_019f3781-6ce5-7ffc-8b09-edefa729da76" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_country_CN_019f3781-6ce5-7f28-9887-dd06598c59b4" xlink:href="https://xbrl.sec.gov/country/2026/country-2026.xsd#country_CN"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_SegmentGeographicalDomain_019f3781-6ce5-7ffc-8b09-edefa729da76" xlink:to="loc_country_CN_019f3781-6ce5-7f28-9887-dd06598c59b4" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeTaxAuthorityAxis_019f3781-6ce5-7d72-a380-6da72e4168ff" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_IncomeTaxAuthorityAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_IncomeTaxContingencyTable_019f3781-6ce5-74a5-90d1-59e185c36e27" xlink:to="loc_us-gaap_IncomeTaxAuthorityAxis_019f3781-6ce5-7d72-a380-6da72e4168ff" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeTaxAuthorityDomain_019f3781-6ce5-7d72-a380-6da72e4168ff_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_IncomeTaxAuthorityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_IncomeTaxAuthorityAxis_019f3781-6ce5-7d72-a380-6da72e4168ff" xlink:to="loc_us-gaap_IncomeTaxAuthorityDomain_019f3781-6ce5-7d72-a380-6da72e4168ff_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeTaxAuthorityDomain_019f3781-6ce5-7de6-a87e-f888e27f71e6" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_IncomeTaxAuthorityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_IncomeTaxAuthorityAxis_019f3781-6ce5-7d72-a380-6da72e4168ff" xlink:to="loc_us-gaap_IncomeTaxAuthorityDomain_019f3781-6ce5-7de6-a87e-f888e27f71e6" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StateAndLocalJurisdictionMember_019f3781-6ce5-79c5-96d0-85c6765a36c8" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_StateAndLocalJurisdictionMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncomeTaxAuthorityDomain_019f3781-6ce5-7de6-a87e-f888e27f71e6" xlink:to="loc_us-gaap_StateAndLocalJurisdictionMember_019f3781-6ce5-79c5-96d0-85c6765a36c8" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeTaxReconciliationTaxSettlements_019f3781-6ce5-7c4d-9ec3-9461993d757b" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_IncomeTaxReconciliationTaxSettlements"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncomeTaxContingencyLineItems_019f3781-6ce5-7342-ae0f-fa98bd582655" xlink:to="loc_us-gaap_IncomeTaxReconciliationTaxSettlements_019f3781-6ce5-7c4d-9ec3-9461993d757b" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeTaxExaminationPenaltiesExpense_019f3781-6ce5-7c34-b850-e8a4f6edb200" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_IncomeTaxExaminationPenaltiesExpense"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncomeTaxContingencyLineItems_019f3781-6ce5-7342-ae0f-fa98bd582655" xlink:to="loc_us-gaap_IncomeTaxExaminationPenaltiesExpense_019f3781-6ce5-7c34-b850-e8a4f6edb200" xlink:type="arc" order="1"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.leggett.com/role/AccumulatedOtherComprehensiveIncomeLossDetails" xlink:type="simple" xlink:href="leg-20260630.xsd#AccumulatedOtherComprehensiveIncomeLossDetails"/>
  <link:definitionLink xlink:role="http://www.leggett.com/role/AccumulatedOtherComprehensiveIncomeLossDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccumulatedOtherComprehensiveIncomeLossLineItems_019f3781-6ce5-7744-b717-636c74272ed8" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AccumulatedOtherComprehensiveIncomeLossLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccumulatedOtherComprehensiveIncomeLossTable_019f3781-6ce5-7709-8b08-bfc702effc22" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AccumulatedOtherComprehensiveIncomeLossTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_AccumulatedOtherComprehensiveIncomeLossLineItems_019f3781-6ce5-7744-b717-636c74272ed8" xlink:to="loc_us-gaap_AccumulatedOtherComprehensiveIncomeLossTable_019f3781-6ce5-7709-8b08-bfc702effc22" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementEquityComponentsAxis_019f3781-6ce5-7c62-9b1f-d1a4732da4c6" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_StatementEquityComponentsAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_AccumulatedOtherComprehensiveIncomeLossTable_019f3781-6ce5-7709-8b08-bfc702effc22" xlink:to="loc_us-gaap_StatementEquityComponentsAxis_019f3781-6ce5-7c62-9b1f-d1a4732da4c6" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EquityComponentDomain_019f3781-6ce5-7c62-9b1f-d1a4732da4c6_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_EquityComponentDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_StatementEquityComponentsAxis_019f3781-6ce5-7c62-9b1f-d1a4732da4c6" xlink:to="loc_us-gaap_EquityComponentDomain_019f3781-6ce5-7c62-9b1f-d1a4732da4c6_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EquityComponentDomain_019f3781-6ce5-7862-8c4f-de56ffc5d54b" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_EquityComponentDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_StatementEquityComponentsAxis_019f3781-6ce5-7c62-9b1f-d1a4732da4c6" xlink:to="loc_us-gaap_EquityComponentDomain_019f3781-6ce5-7862-8c4f-de56ffc5d54b" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccumulatedOtherComprehensiveIncomeMember_019f3781-6ce5-7ebd-a404-3354d24efd1c" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AccumulatedOtherComprehensiveIncomeMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EquityComponentDomain_019f3781-6ce5-7862-8c4f-de56ffc5d54b" xlink:to="loc_us-gaap_AccumulatedOtherComprehensiveIncomeMember_019f3781-6ce5-7ebd-a404-3354d24efd1c" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccumulatedTranslationAdjustmentMember_019f3781-6ce5-73b2-92fd-abf5946c84f6" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AccumulatedTranslationAdjustmentMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AccumulatedOtherComprehensiveIncomeMember_019f3781-6ce5-7ebd-a404-3354d24efd1c" xlink:to="loc_us-gaap_AccumulatedTranslationAdjustmentMember_019f3781-6ce5-73b2-92fd-abf5946c84f6" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccumulatedGainLossNetCashFlowHedgeParentMember_019f3781-6ce5-73ab-a05c-792d42ad43d2" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AccumulatedGainLossNetCashFlowHedgeParentMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AccumulatedOtherComprehensiveIncomeMember_019f3781-6ce5-7ebd-a404-3354d24efd1c" xlink:to="loc_us-gaap_AccumulatedGainLossNetCashFlowHedgeParentMember_019f3781-6ce5-73ab-a05c-792d42ad43d2" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccumulatedDefinedBenefitPlansAdjustmentMember_019f3781-6ce5-7041-8250-0d369b47d7ba" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AccumulatedDefinedBenefitPlansAdjustmentMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AccumulatedOtherComprehensiveIncomeMember_019f3781-6ce5-7ebd-a404-3354d24efd1c" xlink:to="loc_us-gaap_AccumulatedDefinedBenefitPlansAdjustmentMember_019f3781-6ce5-7041-8250-0d369b47d7ba" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodNetOfTaxAbstract_019f3781-6ce5-71fb-972d-df1f5035ea38" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodNetOfTaxAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AccumulatedOtherComprehensiveIncomeLossLineItems_019f3781-6ce5-7744-b717-636c74272ed8" xlink:to="loc_us-gaap_ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodNetOfTaxAbstract_019f3781-6ce5-71fb-972d-df1f5035ea38" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest_019f3781-6ce5-708f-bd2b-c2edee08640a" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodNetOfTaxAbstract_019f3781-6ce5-71fb-972d-df1f5035ea38" xlink:to="loc_us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest_019f3781-6ce5-708f-bd2b-c2edee08640a" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherComprehensiveIncomeLossBeforeReclassificationsBeforeTax_019f3781-6ce5-77bd-ade2-382cf95cf623" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_OtherComprehensiveIncomeLossBeforeReclassificationsBeforeTax"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodNetOfTaxAbstract_019f3781-6ce5-71fb-972d-df1f5035ea38" xlink:to="loc_us-gaap_OtherComprehensiveIncomeLossBeforeReclassificationsBeforeTax_019f3781-6ce5-77bd-ade2-382cf95cf623" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodBeforeTax_019f3781-6ce5-7a6a-a041-530239e6d8aa" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodBeforeTax"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodNetOfTaxAbstract_019f3781-6ce5-71fb-972d-df1f5035ea38" xlink:to="loc_us-gaap_ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodBeforeTax_019f3781-6ce5-7a6a-a041-530239e6d8aa" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherComprehensiveIncomeLossTax_019f3781-6ce5-7a93-aa2b-4e8cd855cdd5" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_OtherComprehensiveIncomeLossTax"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodNetOfTaxAbstract_019f3781-6ce5-71fb-972d-df1f5035ea38" xlink:to="loc_us-gaap_OtherComprehensiveIncomeLossTax_019f3781-6ce5-7a93-aa2b-4e8cd855cdd5" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest_019f3781-6ce5-7d11-8cb9-6cca002f9559" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.leggett.com/role/FairValueScheduleofComponentsofFairValueMeasurementsofFinancialAssetsandLiabilitiesDetails" xlink:type="simple" xlink:href="leg-20260630.xsd#FairValueScheduleofComponentsofFairValueMeasurementsofFinancialAssetsandLiabilitiesDetails"/>
  <link:definitionLink xlink:role="http://www.leggett.com/role/FairValueScheduleofComponentsofFairValueMeasurementsofFinancialAssetsandLiabilitiesDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems_019f3781-6ce5-711e-b87d-e1381f0f2b52" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable_019f3781-6ce5-7114-a56b-593754dc986d" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems_019f3781-6ce5-711e-b87d-e1381f0f2b52" xlink:to="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable_019f3781-6ce5-7114-a56b-593754dc986d" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueByFairValueHierarchyLevelAxis_019f3781-6ce5-7407-a5a7-f6ab17f0ca21" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FairValueByFairValueHierarchyLevelAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable_019f3781-6ce5-7114-a56b-593754dc986d" xlink:to="loc_us-gaap_FairValueByFairValueHierarchyLevelAxis_019f3781-6ce5-7407-a5a7-f6ab17f0ca21" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_019f3781-6ce5-7407-a5a7-f6ab17f0ca21_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FairValueMeasurementsFairValueHierarchyDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_FairValueByFairValueHierarchyLevelAxis_019f3781-6ce5-7407-a5a7-f6ab17f0ca21" xlink:to="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_019f3781-6ce5-7407-a5a7-f6ab17f0ca21_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_019f3781-6ce5-7370-9658-d269adbdd28d" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FairValueMeasurementsFairValueHierarchyDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_FairValueByFairValueHierarchyLevelAxis_019f3781-6ce5-7407-a5a7-f6ab17f0ca21" xlink:to="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_019f3781-6ce5-7370-9658-d269adbdd28d" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueInputsLevel1Member_019f3781-6ce5-7be4-b288-a19ee5c0dfca" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FairValueInputsLevel1Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_019f3781-6ce5-7370-9658-d269adbdd28d" xlink:to="loc_us-gaap_FairValueInputsLevel1Member_019f3781-6ce5-7be4-b288-a19ee5c0dfca" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueInputsLevel2Member_019f3781-6ce5-77cb-b457-77eb1d9da553" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FairValueInputsLevel2Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_019f3781-6ce5-7370-9658-d269adbdd28d" xlink:to="loc_us-gaap_FairValueInputsLevel2Member_019f3781-6ce5-77cb-b457-77eb1d9da553" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueInputsLevel3Member_019f3781-6ce5-76e5-bb39-951642da4388" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FairValueInputsLevel3Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_019f3781-6ce5-7370-9658-d269adbdd28d" xlink:to="loc_us-gaap_FairValueInputsLevel3Member_019f3781-6ce5-76e5-bb39-951642da4388" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CashAndCashEquivalentsAxis_019f3781-6ce5-79f8-8f7b-f58d87ec2040" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_CashAndCashEquivalentsAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable_019f3781-6ce5-7114-a56b-593754dc986d" xlink:to="loc_us-gaap_CashAndCashEquivalentsAxis_019f3781-6ce5-79f8-8f7b-f58d87ec2040" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RestrictedCashAndCashEquivalentsCashAndCashEquivalentsMember_019f3781-6ce5-79f8-8f7b-f58d87ec2040_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_RestrictedCashAndCashEquivalentsCashAndCashEquivalentsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_CashAndCashEquivalentsAxis_019f3781-6ce5-79f8-8f7b-f58d87ec2040" xlink:to="loc_us-gaap_RestrictedCashAndCashEquivalentsCashAndCashEquivalentsMember_019f3781-6ce5-79f8-8f7b-f58d87ec2040_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RestrictedCashAndCashEquivalentsCashAndCashEquivalentsMember_019f3781-6ce5-7264-a9a7-a2f7de83d95f" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_RestrictedCashAndCashEquivalentsCashAndCashEquivalentsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_CashAndCashEquivalentsAxis_019f3781-6ce5-79f8-8f7b-f58d87ec2040" xlink:to="loc_us-gaap_RestrictedCashAndCashEquivalentsCashAndCashEquivalentsMember_019f3781-6ce5-7264-a9a7-a2f7de83d95f" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BankTimeDepositsMember_019f3781-6ce5-7c5f-b774-9e3df6a1fa3e" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_BankTimeDepositsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RestrictedCashAndCashEquivalentsCashAndCashEquivalentsMember_019f3781-6ce5-7264-a9a7-a2f7de83d95f" xlink:to="loc_us-gaap_BankTimeDepositsMember_019f3781-6ce5-7c5f-b774-9e3df6a1fa3e" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancialInstrumentAxis_019f3781-6ce5-7ae7-8f2b-5ac08a5727e4" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FinancialInstrumentAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable_019f3781-6ce5-7114-a56b-593754dc986d" xlink:to="loc_us-gaap_FinancialInstrumentAxis_019f3781-6ce5-7ae7-8f2b-5ac08a5727e4" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_019f3781-6ce5-7ae7-8f2b-5ac08a5727e4_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_FinancialInstrumentAxis_019f3781-6ce5-7ae7-8f2b-5ac08a5727e4" xlink:to="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_019f3781-6ce5-7ae7-8f2b-5ac08a5727e4_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_019f3781-6ce5-7df7-b568-226720b016db" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_FinancialInstrumentAxis_019f3781-6ce5-7ae7-8f2b-5ac08a5727e4" xlink:to="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_019f3781-6ce5-7df7-b568-226720b016db" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_leg_DiversifiedInvestmentsAssociatedWithESUProgramMember_019f3781-6ce5-7d1c-8993-808954d4d108" xlink:href="leg-20260630.xsd#leg_DiversifiedInvestmentsAssociatedWithESUProgramMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_019f3781-6ce5-7df7-b568-226720b016db" xlink:to="loc_leg_DiversifiedInvestmentsAssociatedWithESUProgramMember_019f3781-6ce5-7d1c-8993-808954d4d108" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_leg_LiabilitiesAssociatedWithESUProgramMember_019f3781-6ce5-7e68-a2c2-e1c152522b9c" xlink:href="leg-20260630.xsd#leg_LiabilitiesAssociatedWithESUProgramMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_019f3781-6ce5-7df7-b568-226720b016db" xlink:to="loc_leg_LiabilitiesAssociatedWithESUProgramMember_019f3781-6ce5-7e68-a2c2-e1c152522b9c" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancialInstrumentsFinancialAssetsBalanceSheetGroupingsAbstract_019f3781-6ce5-768d-b599-d9a5bdbddfb9" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FinancialInstrumentsFinancialAssetsBalanceSheetGroupingsAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems_019f3781-6ce5-711e-b87d-e1381f0f2b52" xlink:to="loc_us-gaap_FinancialInstrumentsFinancialAssetsBalanceSheetGroupingsAbstract_019f3781-6ce5-768d-b599-d9a5bdbddfb9" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CashAndCashEquivalentsAbstract_019f3781-6ce5-7195-9148-453e8d28e55f" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_CashAndCashEquivalentsAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FinancialInstrumentsFinancialAssetsBalanceSheetGroupingsAbstract_019f3781-6ce5-768d-b599-d9a5bdbddfb9" xlink:to="loc_us-gaap_CashAndCashEquivalentsAbstract_019f3781-6ce5-7195-9148-453e8d28e55f" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CashAndCashEquivalentsFairValueDisclosure_019f3781-6ce5-7b40-b603-14421e8e20aa" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_CashAndCashEquivalentsFairValueDisclosure"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_CashAndCashEquivalentsAbstract_019f3781-6ce5-7195-9148-453e8d28e55f" xlink:to="loc_us-gaap_CashAndCashEquivalentsFairValueDisclosure_019f3781-6ce5-7b40-b603-14421e8e20aa" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeAssets_019f3781-6ce5-734c-b6d2-587267a3277c" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DerivativeAssets"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FinancialInstrumentsFinancialAssetsBalanceSheetGroupingsAbstract_019f3781-6ce5-768d-b599-d9a5bdbddfb9" xlink:to="loc_us-gaap_DerivativeAssets_019f3781-6ce5-734c-b6d2-587267a3277c" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InvestmentsFairValueDisclosure_019f3781-6ce5-7735-abdd-d4c5c7dca8f2" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_InvestmentsFairValueDisclosure"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FinancialInstrumentsFinancialAssetsBalanceSheetGroupingsAbstract_019f3781-6ce5-768d-b599-d9a5bdbddfb9" xlink:to="loc_us-gaap_InvestmentsFairValueDisclosure_019f3781-6ce5-7735-abdd-d4c5c7dca8f2" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AssetsFairValueDisclosure_019f3781-6ce5-721a-a6f0-9d7295244eae" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AssetsFairValueDisclosure"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FinancialInstrumentsFinancialAssetsBalanceSheetGroupingsAbstract_019f3781-6ce5-768d-b599-d9a5bdbddfb9" xlink:to="loc_us-gaap_AssetsFairValueDisclosure_019f3781-6ce5-721a-a6f0-9d7295244eae" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeAssetStatementOfFinancialPositionExtensibleEnumeration_019f3781-6ce5-7c1c-8de6-eb294d83aae2" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DerivativeAssetStatementOfFinancialPositionExtensibleEnumeration"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FinancialInstrumentsFinancialAssetsBalanceSheetGroupingsAbstract_019f3781-6ce5-768d-b599-d9a5bdbddfb9" xlink:to="loc_us-gaap_DerivativeAssetStatementOfFinancialPositionExtensibleEnumeration_019f3781-6ce5-7c1c-8de6-eb294d83aae2" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancialInstrumentsFinancialLiabilitiesBalanceSheetGroupingsAbstract_019f3781-6ce5-7357-9840-de9f4c269347" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FinancialInstrumentsFinancialLiabilitiesBalanceSheetGroupingsAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems_019f3781-6ce5-711e-b87d-e1381f0f2b52" xlink:to="loc_us-gaap_FinancialInstrumentsFinancialLiabilitiesBalanceSheetGroupingsAbstract_019f3781-6ce5-7357-9840-de9f4c269347" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeLiabilities_019f3781-6ce5-7322-9c4f-fcbc33c99617" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DerivativeLiabilities"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FinancialInstrumentsFinancialLiabilitiesBalanceSheetGroupingsAbstract_019f3781-6ce5-7357-9840-de9f4c269347" xlink:to="loc_us-gaap_DerivativeLiabilities_019f3781-6ce5-7322-9c4f-fcbc33c99617" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancialLiabilitiesFairValueDisclosure_019f3781-6ce5-7a68-9a65-aba8611c5f8c" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FinancialLiabilitiesFairValueDisclosure"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FinancialInstrumentsFinancialLiabilitiesBalanceSheetGroupingsAbstract_019f3781-6ce5-7357-9840-de9f4c269347" xlink:to="loc_us-gaap_FinancialLiabilitiesFairValueDisclosure_019f3781-6ce5-7a68-9a65-aba8611c5f8c" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LiabilitiesFairValueDisclosure_019f3781-6ce5-767e-a3f6-80b75b42d2f4" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LiabilitiesFairValueDisclosure"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FinancialInstrumentsFinancialLiabilitiesBalanceSheetGroupingsAbstract_019f3781-6ce5-7357-9840-de9f4c269347" xlink:to="loc_us-gaap_LiabilitiesFairValueDisclosure_019f3781-6ce5-767e-a3f6-80b75b42d2f4" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeLiabilityStatementOfFinancialPositionExtensibleEnumeration_019f3781-6ce5-713e-a0ea-96579334c683" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DerivativeLiabilityStatementOfFinancialPositionExtensibleEnumeration"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FinancialInstrumentsFinancialLiabilitiesBalanceSheetGroupingsAbstract_019f3781-6ce5-7357-9840-de9f4c269347" xlink:to="loc_us-gaap_DerivativeLiabilityStatementOfFinancialPositionExtensibleEnumeration_019f3781-6ce5-713e-a0ea-96579334c683" xlink:type="arc" order="4"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.leggett.com/role/FairValueNarrativeDetails" xlink:type="simple" xlink:href="leg-20260630.xsd#FairValueNarrativeDetails"/>
  <link:definitionLink xlink:role="http://www.leggett.com/role/FairValueNarrativeDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueBalanceSheetGroupingFinancialStatementCaptionsLineItems_019f3781-6ce5-7793-9159-f4106a94945e" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FairValueBalanceSheetGroupingFinancialStatementCaptionsLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueByBalanceSheetGroupingTable_019f3781-6ce5-77e3-b45b-a86916a3b411" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FairValueByBalanceSheetGroupingTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_FairValueBalanceSheetGroupingFinancialStatementCaptionsLineItems_019f3781-6ce5-7793-9159-f4106a94945e" xlink:to="loc_us-gaap_FairValueByBalanceSheetGroupingTable_019f3781-6ce5-77e3-b45b-a86916a3b411" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueByFairValueHierarchyLevelAxis_019f3781-6ce5-73ec-8b77-38b3f3ea2b13" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FairValueByFairValueHierarchyLevelAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_FairValueByBalanceSheetGroupingTable_019f3781-6ce5-77e3-b45b-a86916a3b411" xlink:to="loc_us-gaap_FairValueByFairValueHierarchyLevelAxis_019f3781-6ce5-73ec-8b77-38b3f3ea2b13" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_019f3781-6ce5-73ec-8b77-38b3f3ea2b13_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FairValueMeasurementsFairValueHierarchyDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_FairValueByFairValueHierarchyLevelAxis_019f3781-6ce5-73ec-8b77-38b3f3ea2b13" xlink:to="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_019f3781-6ce5-73ec-8b77-38b3f3ea2b13_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_019f3781-6ce5-746b-8d6e-809c51fc8dac" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FairValueMeasurementsFairValueHierarchyDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_FairValueByFairValueHierarchyLevelAxis_019f3781-6ce5-73ec-8b77-38b3f3ea2b13" xlink:to="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_019f3781-6ce5-746b-8d6e-809c51fc8dac" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueInputsLevel1Member_019f3781-6ce5-7c95-8395-e455c392f171" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FairValueInputsLevel1Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_019f3781-6ce5-746b-8d6e-809c51fc8dac" xlink:to="loc_us-gaap_FairValueInputsLevel1Member_019f3781-6ce5-7c95-8395-e455c392f171" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueByMeasurementBasisAxis_019f3781-6ce5-73d9-8abf-6bf8f96cf787" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FairValueByMeasurementBasisAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_FairValueByBalanceSheetGroupingTable_019f3781-6ce5-77e3-b45b-a86916a3b411" xlink:to="loc_us-gaap_FairValueByMeasurementBasisAxis_019f3781-6ce5-73d9-8abf-6bf8f96cf787" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PortionAtFairValueFairValueDisclosureMember_019f3781-6ce5-73d9-8abf-6bf8f96cf787_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_PortionAtFairValueFairValueDisclosureMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_FairValueByMeasurementBasisAxis_019f3781-6ce5-73d9-8abf-6bf8f96cf787" xlink:to="loc_us-gaap_PortionAtFairValueFairValueDisclosureMember_019f3781-6ce5-73d9-8abf-6bf8f96cf787_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueDisclosureItemAmountsDomain_019f3781-6ce5-7b57-8120-16934b41c7b9" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FairValueDisclosureItemAmountsDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_FairValueByMeasurementBasisAxis_019f3781-6ce5-73d9-8abf-6bf8f96cf787" xlink:to="loc_us-gaap_FairValueDisclosureItemAmountsDomain_019f3781-6ce5-7b57-8120-16934b41c7b9" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PortionAtFairValueFairValueDisclosureMember_019f3781-6ce5-71ae-8961-3d7faf539ef5" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_PortionAtFairValueFairValueDisclosureMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueDisclosureItemAmountsDomain_019f3781-6ce5-7b57-8120-16934b41c7b9" xlink:to="loc_us-gaap_PortionAtFairValueFairValueDisclosureMember_019f3781-6ce5-71ae-8961-3d7faf539ef5" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CarryingReportedAmountFairValueDisclosureMember_019f3781-6ce5-7c7d-9630-0601b442e8bb" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_CarryingReportedAmountFairValueDisclosureMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PortionAtFairValueFairValueDisclosureMember_019f3781-6ce5-71ae-8961-3d7faf539ef5" xlink:to="loc_us-gaap_CarryingReportedAmountFairValueDisclosureMember_019f3781-6ce5-7c7d-9630-0601b442e8bb" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongTermDebtFairValue_019f3781-6ce5-720a-a3be-8150e6743c13" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LongTermDebtFairValue"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueBalanceSheetGroupingFinancialStatementCaptionsLineItems_019f3781-6ce5-7793-9159-f4106a94945e" xlink:to="loc_us-gaap_LongTermDebtFairValue_019f3781-6ce5-720a-a3be-8150e6743c13" xlink:type="arc" order="0"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.leggett.com/role/DerivativeFinancialInstrumentsScheduleofDerivativeFinancialInstrumentsatFairValueDetails" xlink:type="simple" xlink:href="leg-20260630.xsd#DerivativeFinancialInstrumentsScheduleofDerivativeFinancialInstrumentsatFairValueDetails"/>
  <link:definitionLink xlink:role="http://www.leggett.com/role/DerivativeFinancialInstrumentsScheduleofDerivativeFinancialInstrumentsatFairValueDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativesFairValueLineItems_019f3781-6ce5-7b63-8c7d-f1a07c0c3474" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DerivativesFairValueLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValuesDerivativesBalanceSheetLocationByDerivativeContractTypeByHedgingDesignationTable_019f3781-6ce5-7b41-a61d-9e0f5b62ea20" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FairValuesDerivativesBalanceSheetLocationByDerivativeContractTypeByHedgingDesignationTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_DerivativesFairValueLineItems_019f3781-6ce5-7b63-8c7d-f1a07c0c3474" xlink:to="loc_us-gaap_FairValuesDerivativesBalanceSheetLocationByDerivativeContractTypeByHedgingDesignationTable_019f3781-6ce5-7b41-a61d-9e0f5b62ea20" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_HedgingDesignationAxis_019f3781-6ce5-7101-810b-9a840c74e50f" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_HedgingDesignationAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_FairValuesDerivativesBalanceSheetLocationByDerivativeContractTypeByHedgingDesignationTable_019f3781-6ce5-7b41-a61d-9e0f5b62ea20" xlink:to="loc_us-gaap_HedgingDesignationAxis_019f3781-6ce5-7101-810b-9a840c74e50f" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_HedgingDesignationDomain_019f3781-6ce5-7101-810b-9a840c74e50f_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_HedgingDesignationDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_HedgingDesignationAxis_019f3781-6ce5-7101-810b-9a840c74e50f" xlink:to="loc_us-gaap_HedgingDesignationDomain_019f3781-6ce5-7101-810b-9a840c74e50f_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_HedgingDesignationDomain_019f3781-6ce5-7d32-959a-230d085ea466" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_HedgingDesignationDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_HedgingDesignationAxis_019f3781-6ce5-7101-810b-9a840c74e50f" xlink:to="loc_us-gaap_HedgingDesignationDomain_019f3781-6ce5-7d32-959a-230d085ea466" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DesignatedAsHedgingInstrumentMember_019f3781-6ce5-7c78-bb90-410cad989cb7" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DesignatedAsHedgingInstrumentMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_HedgingDesignationDomain_019f3781-6ce5-7d32-959a-230d085ea466" xlink:to="loc_us-gaap_DesignatedAsHedgingInstrumentMember_019f3781-6ce5-7c78-bb90-410cad989cb7" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NondesignatedMember_019f3781-6ce5-70c2-81b7-4208a2712e40" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_NondesignatedMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_HedgingDesignationDomain_019f3781-6ce5-7d32-959a-230d085ea466" xlink:to="loc_us-gaap_NondesignatedMember_019f3781-6ce5-70c2-81b7-4208a2712e40" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeInstrumentsGainLossByHedgingRelationshipAxis_019f3781-6ce5-7b6b-bb3b-69833e03c17d" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DerivativeInstrumentsGainLossByHedgingRelationshipAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_FairValuesDerivativesBalanceSheetLocationByDerivativeContractTypeByHedgingDesignationTable_019f3781-6ce5-7b41-a61d-9e0f5b62ea20" xlink:to="loc_us-gaap_DerivativeInstrumentsGainLossByHedgingRelationshipAxis_019f3781-6ce5-7b6b-bb3b-69833e03c17d" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_HedgingRelationshipDomain_019f3781-6ce5-7b6b-bb3b-69833e03c17d_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_HedgingRelationshipDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_DerivativeInstrumentsGainLossByHedgingRelationshipAxis_019f3781-6ce5-7b6b-bb3b-69833e03c17d" xlink:to="loc_us-gaap_HedgingRelationshipDomain_019f3781-6ce5-7b6b-bb3b-69833e03c17d_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_HedgingRelationshipDomain_019f3781-6ce5-7a9f-9338-478ee3707897" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_HedgingRelationshipDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_DerivativeInstrumentsGainLossByHedgingRelationshipAxis_019f3781-6ce5-7b6b-bb3b-69833e03c17d" xlink:to="loc_us-gaap_HedgingRelationshipDomain_019f3781-6ce5-7a9f-9338-478ee3707897" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CashFlowHedgingMember_019f3781-6ce5-7df4-966b-ed48fbc75a31" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_CashFlowHedgingMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_HedgingRelationshipDomain_019f3781-6ce5-7a9f-9338-478ee3707897" xlink:to="loc_us-gaap_CashFlowHedgingMember_019f3781-6ce5-7df4-966b-ed48fbc75a31" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueHedgingMember_019f3781-6ce5-7587-aa37-735ac533784f" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FairValueHedgingMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_HedgingRelationshipDomain_019f3781-6ce5-7a9f-9338-478ee3707897" xlink:to="loc_us-gaap_FairValueHedgingMember_019f3781-6ce5-7587-aa37-735ac533784f" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeNotionalAmount_019f3781-6ce5-707c-a8b1-75cbd4119d30" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DerivativeNotionalAmount"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativesFairValueLineItems_019f3781-6ce5-7b63-8c7d-f1a07c0c3474" xlink:to="loc_us-gaap_DerivativeNotionalAmount_019f3781-6ce5-707c-a8b1-75cbd4119d30" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AssetsFairValueDisclosureAbstract_019f3781-6ce5-78c4-9ec0-693b09e56edc" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AssetsFairValueDisclosureAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativesFairValueLineItems_019f3781-6ce5-7b63-8c7d-f1a07c0c3474" xlink:to="loc_us-gaap_AssetsFairValueDisclosureAbstract_019f3781-6ce5-78c4-9ec0-693b09e56edc" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeAssetsCurrent_019f3781-6ce5-7a36-b585-8110f1867097" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DerivativeAssetsCurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AssetsFairValueDisclosureAbstract_019f3781-6ce5-78c4-9ec0-693b09e56edc" xlink:to="loc_us-gaap_DerivativeAssetsCurrent_019f3781-6ce5-7a36-b585-8110f1867097" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeAssetsNoncurrent_019f3781-6ce5-73c2-bb53-0923fc567bd2" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DerivativeAssetsNoncurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AssetsFairValueDisclosureAbstract_019f3781-6ce5-78c4-9ec0-693b09e56edc" xlink:to="loc_us-gaap_DerivativeAssetsNoncurrent_019f3781-6ce5-73c2-bb53-0923fc567bd2" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LiabilitiesFairValueDisclosureAbstract_019f3781-6ce5-7a76-979f-1d48d068648e" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LiabilitiesFairValueDisclosureAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativesFairValueLineItems_019f3781-6ce5-7b63-8c7d-f1a07c0c3474" xlink:to="loc_us-gaap_LiabilitiesFairValueDisclosureAbstract_019f3781-6ce5-7a76-979f-1d48d068648e" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeLiabilitiesCurrent_019f3781-6ce5-7ff1-98da-80c2a833b01d" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DerivativeLiabilitiesCurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LiabilitiesFairValueDisclosureAbstract_019f3781-6ce5-7a76-979f-1d48d068648e" xlink:to="loc_us-gaap_DerivativeLiabilitiesCurrent_019f3781-6ce5-7ff1-98da-80c2a833b01d" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeLiabilitiesNoncurrent_019f3781-6ce5-70c0-84ca-46da7146371f" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DerivativeLiabilitiesNoncurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LiabilitiesFairValueDisclosureAbstract_019f3781-6ce5-7a76-979f-1d48d068648e" xlink:to="loc_us-gaap_DerivativeLiabilitiesNoncurrent_019f3781-6ce5-70c0-84ca-46da7146371f" xlink:type="arc" order="2"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.leggett.com/role/DerivativeFinancialInstrumentsScheduleofPreTaxGainsLossesofHedgingActivitiesDetails" xlink:type="simple" xlink:href="leg-20260630.xsd#DerivativeFinancialInstrumentsScheduleofPreTaxGainsLossesofHedgingActivitiesDetails"/>
  <link:definitionLink xlink:role="http://www.leggett.com/role/DerivativeFinancialInstrumentsScheduleofPreTaxGainsLossesofHedgingActivitiesDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeInstrumentsGainLossLineItems_019f3781-6ce5-7076-b0c8-dc0ad36f22b3" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DerivativeInstrumentsGainLossLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeInstrumentsGainLossByHedgingRelationshipByIncomeStatementLocationByDerivativeInstrumentRiskTable_019f3781-6ce5-755f-b09d-0c1090278ee6" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DerivativeInstrumentsGainLossByHedgingRelationshipByIncomeStatementLocationByDerivativeInstrumentRiskTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_DerivativeInstrumentsGainLossLineItems_019f3781-6ce5-7076-b0c8-dc0ad36f22b3" xlink:to="loc_us-gaap_DerivativeInstrumentsGainLossByHedgingRelationshipByIncomeStatementLocationByDerivativeInstrumentRiskTable_019f3781-6ce5-755f-b09d-0c1090278ee6" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_HedgingDesignationAxis_019f3781-6ce5-721b-97ed-168cf5d74a3f" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_HedgingDesignationAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DerivativeInstrumentsGainLossByHedgingRelationshipByIncomeStatementLocationByDerivativeInstrumentRiskTable_019f3781-6ce5-755f-b09d-0c1090278ee6" xlink:to="loc_us-gaap_HedgingDesignationAxis_019f3781-6ce5-721b-97ed-168cf5d74a3f" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_HedgingDesignationDomain_019f3781-6ce5-721b-97ed-168cf5d74a3f_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_HedgingDesignationDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_HedgingDesignationAxis_019f3781-6ce5-721b-97ed-168cf5d74a3f" xlink:to="loc_us-gaap_HedgingDesignationDomain_019f3781-6ce5-721b-97ed-168cf5d74a3f_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_HedgingDesignationDomain_019f3781-6ce5-7dcc-828e-ef77b0524281" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_HedgingDesignationDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_HedgingDesignationAxis_019f3781-6ce5-721b-97ed-168cf5d74a3f" xlink:to="loc_us-gaap_HedgingDesignationDomain_019f3781-6ce5-7dcc-828e-ef77b0524281" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DesignatedAsHedgingInstrumentMember_019f3781-6ce5-7dd8-a1a6-3302fa8aba82" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DesignatedAsHedgingInstrumentMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_HedgingDesignationDomain_019f3781-6ce5-7dcc-828e-ef77b0524281" xlink:to="loc_us-gaap_DesignatedAsHedgingInstrumentMember_019f3781-6ce5-7dd8-a1a6-3302fa8aba82" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NondesignatedMember_019f3781-6ce5-7624-af5c-66a4bad02f7a" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_NondesignatedMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_HedgingDesignationDomain_019f3781-6ce5-7dcc-828e-ef77b0524281" xlink:to="loc_us-gaap_NondesignatedMember_019f3781-6ce5-7624-af5c-66a4bad02f7a" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeInstrumentRiskAxis_019f3781-6ce5-728c-b3d8-9e3d54692012" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DerivativeInstrumentRiskAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DerivativeInstrumentsGainLossByHedgingRelationshipByIncomeStatementLocationByDerivativeInstrumentRiskTable_019f3781-6ce5-755f-b09d-0c1090278ee6" xlink:to="loc_us-gaap_DerivativeInstrumentRiskAxis_019f3781-6ce5-728c-b3d8-9e3d54692012" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeContractTypeDomain_019f3781-6ce5-728c-b3d8-9e3d54692012_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DerivativeContractTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_DerivativeInstrumentRiskAxis_019f3781-6ce5-728c-b3d8-9e3d54692012" xlink:to="loc_us-gaap_DerivativeContractTypeDomain_019f3781-6ce5-728c-b3d8-9e3d54692012_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeContractTypeDomain_019f3781-6ce5-7c9a-848e-c8c1d5060b62" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DerivativeContractTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_DerivativeInstrumentRiskAxis_019f3781-6ce5-728c-b3d8-9e3d54692012" xlink:to="loc_us-gaap_DerivativeContractTypeDomain_019f3781-6ce5-7c9a-848e-c8c1d5060b62" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InterestRateContractMember_019f3781-6ce5-7efb-a841-74d0367f4850" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_InterestRateContractMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeContractTypeDomain_019f3781-6ce5-7c9a-848e-c8c1d5060b62" xlink:to="loc_us-gaap_InterestRateContractMember_019f3781-6ce5-7efb-a841-74d0367f4850" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ForeignExchangeContractMember_019f3781-6ce5-79b0-9710-8da55f67175b" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ForeignExchangeContractMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeContractTypeDomain_019f3781-6ce5-7c9a-848e-c8c1d5060b62" xlink:to="loc_us-gaap_ForeignExchangeContractMember_019f3781-6ce5-79b0-9710-8da55f67175b" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeInstrumentsGainLossByHedgingRelationshipAxis_019f3781-6ce5-72dd-877a-717c725cd83c" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DerivativeInstrumentsGainLossByHedgingRelationshipAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DerivativeInstrumentsGainLossByHedgingRelationshipByIncomeStatementLocationByDerivativeInstrumentRiskTable_019f3781-6ce5-755f-b09d-0c1090278ee6" xlink:to="loc_us-gaap_DerivativeInstrumentsGainLossByHedgingRelationshipAxis_019f3781-6ce5-72dd-877a-717c725cd83c" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_HedgingRelationshipDomain_019f3781-6ce5-72dd-877a-717c725cd83c_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_HedgingRelationshipDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_DerivativeInstrumentsGainLossByHedgingRelationshipAxis_019f3781-6ce5-72dd-877a-717c725cd83c" xlink:to="loc_us-gaap_HedgingRelationshipDomain_019f3781-6ce5-72dd-877a-717c725cd83c_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_HedgingRelationshipDomain_019f3781-6ce5-7039-91a0-24d790f68a0c" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_HedgingRelationshipDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_DerivativeInstrumentsGainLossByHedgingRelationshipAxis_019f3781-6ce5-72dd-877a-717c725cd83c" xlink:to="loc_us-gaap_HedgingRelationshipDomain_019f3781-6ce5-7039-91a0-24d790f68a0c" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CashFlowHedgingMember_019f3781-6ce5-725d-8836-8f714d84fb52" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_CashFlowHedgingMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_HedgingRelationshipDomain_019f3781-6ce5-7039-91a0-24d790f68a0c" xlink:to="loc_us-gaap_CashFlowHedgingMember_019f3781-6ce5-725d-8836-8f714d84fb52" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueHedgingMember_019f3781-6ce5-7bbb-b224-932854e8a4cb" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FairValueHedgingMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_HedgingRelationshipDomain_019f3781-6ce5-7039-91a0-24d790f68a0c" xlink:to="loc_us-gaap_FairValueHedgingMember_019f3781-6ce5-7bbb-b224-932854e8a4cb" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementOfIncomeLocationBalanceAxis_019f3781-6ce5-7640-ab9c-707302650e85" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_StatementOfIncomeLocationBalanceAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DerivativeInstrumentsGainLossByHedgingRelationshipByIncomeStatementLocationByDerivativeInstrumentRiskTable_019f3781-6ce5-755f-b09d-0c1090278ee6" xlink:to="loc_us-gaap_StatementOfIncomeLocationBalanceAxis_019f3781-6ce5-7640-ab9c-707302650e85" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeGainLossOnDerivativeNet_019f3781-6ce5-744d-8f52-f6dbddc6e3ee" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DerivativeGainLossOnDerivativeNet"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeInstrumentsGainLossLineItems_019f3781-6ce5-7076-b0c8-dc0ad36f22b3" xlink:to="loc_us-gaap_DerivativeGainLossOnDerivativeNet_019f3781-6ce5-744d-8f52-f6dbddc6e3ee" xlink:type="arc" order="0"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.leggett.com/role/DerivativeFinancialInstrumentsScheduleofPreTaxGainsLossesofHedgingActivitiesDetails_1" xlink:type="simple" xlink:href="leg-20260630.xsd#DerivativeFinancialInstrumentsScheduleofPreTaxGainsLossesofHedgingActivitiesDetails_1"/>
  <link:definitionLink xlink:role="http://www.leggett.com/role/DerivativeFinancialInstrumentsScheduleofPreTaxGainsLossesofHedgingActivitiesDetails_1" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeInstrumentsGainLossLineItems_019f3781-6ce5-7076-b0c8-dc0ad36f22b3" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DerivativeInstrumentsGainLossLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeInstrumentsGainLossByHedgingRelationshipByIncomeStatementLocationByDerivativeInstrumentRiskTable_019f3781-6ce5-755f-b09d-0c1090278ee6" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DerivativeInstrumentsGainLossByHedgingRelationshipByIncomeStatementLocationByDerivativeInstrumentRiskTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_DerivativeInstrumentsGainLossLineItems_019f3781-6ce5-7076-b0c8-dc0ad36f22b3" xlink:to="loc_us-gaap_DerivativeInstrumentsGainLossByHedgingRelationshipByIncomeStatementLocationByDerivativeInstrumentRiskTable_019f3781-6ce5-755f-b09d-0c1090278ee6" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_HedgingDesignationAxis_019f3781-6ce5-721b-97ed-168cf5d74a3f" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_HedgingDesignationAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DerivativeInstrumentsGainLossByHedgingRelationshipByIncomeStatementLocationByDerivativeInstrumentRiskTable_019f3781-6ce5-755f-b09d-0c1090278ee6" xlink:to="loc_us-gaap_HedgingDesignationAxis_019f3781-6ce5-721b-97ed-168cf5d74a3f" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_HedgingDesignationDomain_019f3781-6ce5-721b-97ed-168cf5d74a3f_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_HedgingDesignationDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_HedgingDesignationAxis_019f3781-6ce5-721b-97ed-168cf5d74a3f" xlink:to="loc_us-gaap_HedgingDesignationDomain_019f3781-6ce5-721b-97ed-168cf5d74a3f_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_HedgingDesignationDomain_019f3781-6ce5-7dcc-828e-ef77b0524281" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_HedgingDesignationDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_HedgingDesignationAxis_019f3781-6ce5-721b-97ed-168cf5d74a3f" xlink:to="loc_us-gaap_HedgingDesignationDomain_019f3781-6ce5-7dcc-828e-ef77b0524281" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DesignatedAsHedgingInstrumentMember_019f3781-6ce5-7dd8-a1a6-3302fa8aba82" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DesignatedAsHedgingInstrumentMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_HedgingDesignationDomain_019f3781-6ce5-7dcc-828e-ef77b0524281" xlink:to="loc_us-gaap_DesignatedAsHedgingInstrumentMember_019f3781-6ce5-7dd8-a1a6-3302fa8aba82" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NondesignatedMember_019f3781-6ce5-7624-af5c-66a4bad02f7a" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_NondesignatedMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_HedgingDesignationDomain_019f3781-6ce5-7dcc-828e-ef77b0524281" xlink:to="loc_us-gaap_NondesignatedMember_019f3781-6ce5-7624-af5c-66a4bad02f7a" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeInstrumentRiskAxis_019f3781-6ce5-728c-b3d8-9e3d54692012" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DerivativeInstrumentRiskAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DerivativeInstrumentsGainLossByHedgingRelationshipByIncomeStatementLocationByDerivativeInstrumentRiskTable_019f3781-6ce5-755f-b09d-0c1090278ee6" xlink:to="loc_us-gaap_DerivativeInstrumentRiskAxis_019f3781-6ce5-728c-b3d8-9e3d54692012" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeContractTypeDomain_019f3781-6ce5-728c-b3d8-9e3d54692012_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DerivativeContractTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_DerivativeInstrumentRiskAxis_019f3781-6ce5-728c-b3d8-9e3d54692012" xlink:to="loc_us-gaap_DerivativeContractTypeDomain_019f3781-6ce5-728c-b3d8-9e3d54692012_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeContractTypeDomain_019f3781-6ce5-7c9a-848e-c8c1d5060b62" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DerivativeContractTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_DerivativeInstrumentRiskAxis_019f3781-6ce5-728c-b3d8-9e3d54692012" xlink:to="loc_us-gaap_DerivativeContractTypeDomain_019f3781-6ce5-7c9a-848e-c8c1d5060b62" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InterestRateContractMember_019f3781-6ce5-7efb-a841-74d0367f4850" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_InterestRateContractMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeContractTypeDomain_019f3781-6ce5-7c9a-848e-c8c1d5060b62" xlink:to="loc_us-gaap_InterestRateContractMember_019f3781-6ce5-7efb-a841-74d0367f4850" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ForeignExchangeContractMember_019f3781-6ce5-79b0-9710-8da55f67175b" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ForeignExchangeContractMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeContractTypeDomain_019f3781-6ce5-7c9a-848e-c8c1d5060b62" xlink:to="loc_us-gaap_ForeignExchangeContractMember_019f3781-6ce5-79b0-9710-8da55f67175b" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeInstrumentsGainLossByHedgingRelationshipAxis_019f3781-6ce5-72dd-877a-717c725cd83c" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DerivativeInstrumentsGainLossByHedgingRelationshipAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DerivativeInstrumentsGainLossByHedgingRelationshipByIncomeStatementLocationByDerivativeInstrumentRiskTable_019f3781-6ce5-755f-b09d-0c1090278ee6" xlink:to="loc_us-gaap_DerivativeInstrumentsGainLossByHedgingRelationshipAxis_019f3781-6ce5-72dd-877a-717c725cd83c" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_HedgingRelationshipDomain_019f3781-6ce5-72dd-877a-717c725cd83c_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_HedgingRelationshipDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_DerivativeInstrumentsGainLossByHedgingRelationshipAxis_019f3781-6ce5-72dd-877a-717c725cd83c" xlink:to="loc_us-gaap_HedgingRelationshipDomain_019f3781-6ce5-72dd-877a-717c725cd83c_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_HedgingRelationshipDomain_019f3781-6ce5-7039-91a0-24d790f68a0c" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_HedgingRelationshipDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_DerivativeInstrumentsGainLossByHedgingRelationshipAxis_019f3781-6ce5-72dd-877a-717c725cd83c" xlink:to="loc_us-gaap_HedgingRelationshipDomain_019f3781-6ce5-7039-91a0-24d790f68a0c" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CashFlowHedgingMember_019f3781-6ce5-725d-8836-8f714d84fb52" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_CashFlowHedgingMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_HedgingRelationshipDomain_019f3781-6ce5-7039-91a0-24d790f68a0c" xlink:to="loc_us-gaap_CashFlowHedgingMember_019f3781-6ce5-725d-8836-8f714d84fb52" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueHedgingMember_019f3781-6ce5-7bbb-b224-932854e8a4cb" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FairValueHedgingMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_HedgingRelationshipDomain_019f3781-6ce5-7039-91a0-24d790f68a0c" xlink:to="loc_us-gaap_FairValueHedgingMember_019f3781-6ce5-7bbb-b224-932854e8a4cb" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeGainLossOnDerivativeNet_019f3781-6ce5-744d-8f52-f6dbddc6e3ee" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DerivativeGainLossOnDerivativeNet"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeInstrumentsGainLossLineItems_019f3781-6ce5-7076-b0c8-dc0ad36f22b3" xlink:to="loc_us-gaap_DerivativeGainLossOnDerivativeNet_019f3781-6ce5-744d-8f52-f6dbddc6e3ee" xlink:type="arc" order="0"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.leggett.com/role/DivestituresNarrativeDetails" xlink:type="simple" xlink:href="leg-20260630.xsd#DivestituresNarrativeDetails"/>
  <link:definitionLink xlink:role="http://www.leggett.com/role/DivestituresNarrativeDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsLineItems_019f3781-6ce5-7ce6-8434-1ad123cd9c6d" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsTable_019f3781-6ce5-7468-bebb-030530587950" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsLineItems_019f3781-6ce5-7ce6-8434-1ad123cd9c6d" xlink:to="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsTable_019f3781-6ce5-7468-bebb-030530587950" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DisposalGroupClassificationAxis_019f3781-6ce5-7ddc-8cd6-a75c3b7a97eb" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DisposalGroupClassificationAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsTable_019f3781-6ce5-7468-bebb-030530587950" xlink:to="loc_us-gaap_DisposalGroupClassificationAxis_019f3781-6ce5-7ddc-8cd6-a75c3b7a97eb" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DisposalGroupClassificationDomain_019f3781-6ce5-7ddc-8cd6-a75c3b7a97eb_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DisposalGroupClassificationDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_DisposalGroupClassificationAxis_019f3781-6ce5-7ddc-8cd6-a75c3b7a97eb" xlink:to="loc_us-gaap_DisposalGroupClassificationDomain_019f3781-6ce5-7ddc-8cd6-a75c3b7a97eb_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DisposalGroupClassificationDomain_019f3781-6ce5-756c-a730-d848bde2888c" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DisposalGroupClassificationDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_DisposalGroupClassificationAxis_019f3781-6ce5-7ddc-8cd6-a75c3b7a97eb" xlink:to="loc_us-gaap_DisposalGroupClassificationDomain_019f3781-6ce5-756c-a730-d848bde2888c" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DisposalGroupNotDiscontinuedOperationsMember_019f3781-6ce5-7986-82a0-98e5b72214cb" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DisposalGroupNotDiscontinuedOperationsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DisposalGroupClassificationDomain_019f3781-6ce5-756c-a730-d848bde2888c" xlink:to="loc_us-gaap_DisposalGroupNotDiscontinuedOperationsMember_019f3781-6ce5-7986-82a0-98e5b72214cb" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis_019f3781-6ce5-7078-8b59-0b51816597bd" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsTable_019f3781-6ce5-7468-bebb-030530587950" xlink:to="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis_019f3781-6ce5-7078-8b59-0b51816597bd" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DisposalGroupsIncludingDiscontinuedOperationsNameDomain_019f3781-6ce5-7078-8b59-0b51816597bd_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DisposalGroupsIncludingDiscontinuedOperationsNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis_019f3781-6ce5-7078-8b59-0b51816597bd" xlink:to="loc_us-gaap_DisposalGroupsIncludingDiscontinuedOperationsNameDomain_019f3781-6ce5-7078-8b59-0b51816597bd_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DisposalGroupsIncludingDiscontinuedOperationsNameDomain_019f3781-6ce5-7d0e-8607-f376010a1a78" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DisposalGroupsIncludingDiscontinuedOperationsNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis_019f3781-6ce5-7078-8b59-0b51816597bd" xlink:to="loc_us-gaap_DisposalGroupsIncludingDiscontinuedOperationsNameDomain_019f3781-6ce5-7d0e-8607-f376010a1a78" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_leg_AerospaceProductsGroupMember_019f3781-6ce5-7db8-964a-d9f824c55a79" xlink:href="leg-20260630.xsd#leg_AerospaceProductsGroupMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DisposalGroupsIncludingDiscontinuedOperationsNameDomain_019f3781-6ce5-7d0e-8607-f376010a1a78" xlink:to="loc_leg_AerospaceProductsGroupMember_019f3781-6ce5-7db8-964a-d9f824c55a79" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_leg_UnitedStatesMachineryBusinessMember_019f3781-6ce5-72d8-98c1-20f8a445f80c" xlink:href="leg-20260630.xsd#leg_UnitedStatesMachineryBusinessMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DisposalGroupsIncludingDiscontinuedOperationsNameDomain_019f3781-6ce5-7d0e-8607-f376010a1a78" xlink:to="loc_leg_UnitedStatesMachineryBusinessMember_019f3781-6ce5-72d8-98c1-20f8a445f80c" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DisposalGroupIncludingDiscontinuedOperationConsideration_019f3781-6ce5-7af8-af94-5d996c2a9dc8" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DisposalGroupIncludingDiscontinuedOperationConsideration"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsLineItems_019f3781-6ce5-7ce6-8434-1ad123cd9c6d" xlink:to="loc_us-gaap_DisposalGroupIncludingDiscontinuedOperationConsideration_019f3781-6ce5-7af8-af94-5d996c2a9dc8" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DisposalGroupNotDiscontinuedOperationGainLossOnDisposal_019f3781-6ce5-70cd-80ad-f731f05a674a" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DisposalGroupNotDiscontinuedOperationGainLossOnDisposal"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsLineItems_019f3781-6ce5-7ce6-8434-1ad123cd9c6d" xlink:to="loc_us-gaap_DisposalGroupNotDiscontinuedOperationGainLossOnDisposal_019f3781-6ce5-70cd-80ad-f731f05a674a" xlink:type="arc" order="1"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.leggett.com/role/DivestituresExternalSalesandPretaxEarningsDetails" xlink:type="simple" xlink:href="leg-20260630.xsd#DivestituresExternalSalesandPretaxEarningsDetails"/>
  <link:definitionLink xlink:role="http://www.leggett.com/role/DivestituresExternalSalesandPretaxEarningsDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsLineItems_019f3781-6ce5-7570-bb04-f5511d42ef66" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsTable_019f3781-6ce5-7855-a171-3bb765d9046c" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsLineItems_019f3781-6ce5-7570-bb04-f5511d42ef66" xlink:to="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsTable_019f3781-6ce5-7855-a171-3bb765d9046c" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DisposalGroupClassificationAxis_019f3781-6ce5-7d50-bb74-5318bb244043" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DisposalGroupClassificationAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsTable_019f3781-6ce5-7855-a171-3bb765d9046c" xlink:to="loc_us-gaap_DisposalGroupClassificationAxis_019f3781-6ce5-7d50-bb74-5318bb244043" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DisposalGroupClassificationDomain_019f3781-6ce5-7d50-bb74-5318bb244043_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DisposalGroupClassificationDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_DisposalGroupClassificationAxis_019f3781-6ce5-7d50-bb74-5318bb244043" xlink:to="loc_us-gaap_DisposalGroupClassificationDomain_019f3781-6ce5-7d50-bb74-5318bb244043_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DisposalGroupClassificationDomain_019f3781-6ce5-787f-ab39-2b0cfaa487aa" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DisposalGroupClassificationDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_DisposalGroupClassificationAxis_019f3781-6ce5-7d50-bb74-5318bb244043" xlink:to="loc_us-gaap_DisposalGroupClassificationDomain_019f3781-6ce5-787f-ab39-2b0cfaa487aa" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DisposalGroupHeldforsaleNotDiscontinuedOperationsMember_019f3781-6ce5-751a-b5c2-a0dcdddc079f" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DisposalGroupHeldforsaleNotDiscontinuedOperationsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DisposalGroupClassificationDomain_019f3781-6ce5-787f-ab39-2b0cfaa487aa" xlink:to="loc_us-gaap_DisposalGroupHeldforsaleNotDiscontinuedOperationsMember_019f3781-6ce5-751a-b5c2-a0dcdddc079f" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis_019f3781-6ce5-7477-b5d9-a0986a6e589e" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsTable_019f3781-6ce5-7855-a171-3bb765d9046c" xlink:to="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis_019f3781-6ce5-7477-b5d9-a0986a6e589e" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DisposalGroupsIncludingDiscontinuedOperationsNameDomain_019f3781-6ce5-7477-b5d9-a0986a6e589e_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DisposalGroupsIncludingDiscontinuedOperationsNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis_019f3781-6ce5-7477-b5d9-a0986a6e589e" xlink:to="loc_us-gaap_DisposalGroupsIncludingDiscontinuedOperationsNameDomain_019f3781-6ce5-7477-b5d9-a0986a6e589e_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DisposalGroupsIncludingDiscontinuedOperationsNameDomain_019f3781-6ce5-70eb-b3ff-36c97a3808ef" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DisposalGroupsIncludingDiscontinuedOperationsNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis_019f3781-6ce5-7477-b5d9-a0986a6e589e" xlink:to="loc_us-gaap_DisposalGroupsIncludingDiscontinuedOperationsNameDomain_019f3781-6ce5-70eb-b3ff-36c97a3808ef" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_leg_AerospaceProductsGroupMember_019f3781-6ce5-7364-a240-158d44be746b" xlink:href="leg-20260630.xsd#leg_AerospaceProductsGroupMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DisposalGroupsIncludingDiscontinuedOperationsNameDomain_019f3781-6ce5-70eb-b3ff-36c97a3808ef" xlink:to="loc_leg_AerospaceProductsGroupMember_019f3781-6ce5-7364-a240-158d44be746b" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DisposalGroupIncludingDiscontinuedOperationRevenue_019f3781-6ce5-774a-972d-02af03841400" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DisposalGroupIncludingDiscontinuedOperationRevenue"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsLineItems_019f3781-6ce5-7570-bb04-f5511d42ef66" xlink:to="loc_us-gaap_DisposalGroupIncludingDiscontinuedOperationRevenue_019f3781-6ce5-774a-972d-02af03841400" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_leg_DisposalGroupIncludingDiscontinuedOperationIncomeLossBeforeIncomeTax_019f3781-6ce5-7670-bec9-63888e23b8eb" xlink:href="leg-20260630.xsd#leg_DisposalGroupIncludingDiscontinuedOperationIncomeLossBeforeIncomeTax"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsLineItems_019f3781-6ce5-7570-bb04-f5511d42ef66" xlink:to="loc_leg_DisposalGroupIncludingDiscontinuedOperationIncomeLossBeforeIncomeTax_019f3781-6ce5-7670-bec9-63888e23b8eb" xlink:type="arc" order="1"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://fasb.org/srt/role/srt-eedm/ExtensibleEnumerationLists" xlink:type="simple" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-roles-2026.xsd#eedm1"/>
  <link:definitionLink xlink:role="http://fasb.org/srt/role/srt-eedm/ExtensibleEnumerationLists" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AssetsAbstract" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AssetsAbstract"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherAssetsNoncurrent" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_OtherAssetsNoncurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AssetsAbstract" xlink:to="loc_us-gaap_OtherAssetsNoncurrent" xlink:type="arc" order="101"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AssetsCurrent" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AssetsCurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AssetsAbstract" xlink:to="loc_us-gaap_AssetsCurrent" xlink:type="arc" order="102"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LiabilitiesAbstract" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LiabilitiesAbstract"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LiabilitiesNoncurrent" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LiabilitiesNoncurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LiabilitiesAbstract" xlink:to="loc_us-gaap_LiabilitiesNoncurrent" xlink:type="arc" order="31"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherLiabilitiesCurrent" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_OtherLiabilitiesCurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LiabilitiesAbstract" xlink:to="loc_us-gaap_OtherLiabilitiesCurrent" xlink:type="arc" order="32"/>
  </link:definitionLink>
</link:linkbase>
