<?xml version='1.0' encoding='iso-8859-1'?>
<!-- Produced by edgar-services.com using EDGARsuite software, Advanced Computer Innovations, Inc., Copyright (C) 2008-2026 [PPWGG7LDR1F0VC8LN570]. www.edgarsuite.com -->
<link:linkbase xmlns="http://www.xbrl.org/2003/linkbase"
		xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
		xsi:schemaLocation="http://www.xbrl.org/2003/linkbase http://www.xbrl.org/2003/xbrl-linkbase-2003-12-31.xsd"
		xmlns:fil="http://www.pacificbooker.com/20260131"
		xmlns:link="http://www.xbrl.org/2003/linkbase"
		xmlns:xlink="http://www.w3.org/1999/xlink"
		xmlns:xbrldt="http://xbrl.org/2005/xbrldt"
		xmlns:xbrli="http://www.xbrl.org/2003/instance">
	<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.pacificbooker.com/20260131/role/idr_DocumentDocumentAndEntityInformation" xlink:type="simple" xlink:href="pbmlf-20260131.xsd#idr_DocumentDocumentAndEntityInformation"/>
	<link:definitionLink xlink:type="extended" xlink:role="http://www.pacificbooker.com/20260131/role/idr_DocumentDocumentAndEntityInformation">
		<link:loc xlink:type='locator' xlink:href='https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_StatementTable' xlink:label='us-gaap_StatementTable'/>
		<link:loc xlink:type='locator' xlink:href='https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_EntityAddressesAddressTypeAxis' xlink:label='dei_EntityAddressesAddressTypeAxis'/>
		<link:definitionArc xlink:type='arc' xlink:arcrole='http://xbrl.org/int/dim/arcrole/hypercube-dimension' xlink:from='us-gaap_StatementTable' xlink:to='dei_EntityAddressesAddressTypeAxis' use='optional' order='1.0' xbrldt:contextElement='segment'/>
		<link:loc xlink:type='locator' xlink:href='https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_AddressTypeDomain' xlink:label='dei_AddressTypeDomain'/>
		<link:definitionArc xlink:type='arc' xlink:arcrole='http://xbrl.org/int/dim/arcrole/dimension-domain' xlink:from='dei_EntityAddressesAddressTypeAxis' xlink:to='dei_AddressTypeDomain' use='optional' order='1.0'/>
		<link:loc xlink:type='locator' xlink:href='https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_AddressTypeDomain' xlink:label='dei_AddressTypeDomain_1'/>
		<link:definitionArc xlink:type='arc' xlink:arcrole='http://xbrl.org/int/dim/arcrole/dimension-default' xlink:from='dei_EntityAddressesAddressTypeAxis' xlink:to='dei_AddressTypeDomain_1' use='optional' order='1.0' xbrldt:contextElement='segment'/>
		<link:loc xlink:type='locator' xlink:href='https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_BusinessContactMember' xlink:label='dei_BusinessContactMember'/>
		<link:definitionArc xlink:type='arc' xlink:arcrole='http://xbrl.org/int/dim/arcrole/domain-member' xlink:from='dei_AddressTypeDomain' xlink:to='dei_BusinessContactMember' use='optional' order='1.0'/>
		<link:loc xlink:type='locator' xlink:href='https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_StatementLineItems' xlink:label='us-gaap_StatementLineItems'/>
		<link:definitionArc xlink:type='arc' xlink:arcrole='http://xbrl.org/int/dim/arcrole/all' xlink:from='us-gaap_StatementLineItems' xlink:to='us-gaap_StatementTable' order='0.5' xbrldt:closed='true' xbrldt:contextElement='segment' use='optional'/>
		<link:loc xlink:type='locator' xlink:href='https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_EntityCentralIndexKey' xlink:label='dei_EntityCentralIndexKey'/>
		<link:definitionArc xlink:type='arc' xlink:arcrole='http://xbrl.org/int/dim/arcrole/domain-member' xlink:from='us-gaap_StatementLineItems' xlink:to='dei_EntityCentralIndexKey' use='optional' order='1.0'/>
		<link:loc xlink:type='locator' xlink:href='https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_DocumentType' xlink:label='dei_DocumentType'/>
		<link:definitionArc xlink:type='arc' xlink:arcrole='http://xbrl.org/int/dim/arcrole/domain-member' xlink:from='us-gaap_StatementLineItems' xlink:to='dei_DocumentType' use='optional' order='2.0'/>
		<link:loc xlink:type='locator' xlink:href='https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_DocumentRegistrationStatement' xlink:label='dei_DocumentRegistrationStatement'/>
		<link:definitionArc xlink:type='arc' xlink:arcrole='http://xbrl.org/int/dim/arcrole/domain-member' xlink:from='us-gaap_StatementLineItems' xlink:to='dei_DocumentRegistrationStatement' use='optional' order='3.0'/>
		<link:loc xlink:type='locator' xlink:href='https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_DocumentPeriodStartDate' xlink:label='dei_DocumentPeriodStartDate'/>
		<link:definitionArc xlink:type='arc' xlink:arcrole='http://xbrl.org/int/dim/arcrole/domain-member' xlink:from='us-gaap_StatementLineItems' xlink:to='dei_DocumentPeriodStartDate' use='optional' order='4.0'/>
		<link:loc xlink:type='locator' xlink:href='https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_DocumentAnnualReport' xlink:label='dei_DocumentAnnualReport'/>
		<link:definitionArc xlink:type='arc' xlink:arcrole='http://xbrl.org/int/dim/arcrole/domain-member' xlink:from='us-gaap_StatementLineItems' xlink:to='dei_DocumentAnnualReport' use='optional' order='5.0'/>
		<link:loc xlink:type='locator' xlink:href='https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_DocumentPeriodEndDate' xlink:label='dei_DocumentPeriodEndDate'/>
		<link:definitionArc xlink:type='arc' xlink:arcrole='http://xbrl.org/int/dim/arcrole/domain-member' xlink:from='us-gaap_StatementLineItems' xlink:to='dei_DocumentPeriodEndDate' use='optional' order='6.0'/>
		<link:loc xlink:type='locator' xlink:href='https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_CurrentFiscalYearEndDate' xlink:label='dei_CurrentFiscalYearEndDate'/>
		<link:definitionArc xlink:type='arc' xlink:arcrole='http://xbrl.org/int/dim/arcrole/domain-member' xlink:from='us-gaap_StatementLineItems' xlink:to='dei_CurrentFiscalYearEndDate' use='optional' order='7.0'/>
		<link:loc xlink:type='locator' xlink:href='https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_DocumentTransitionReport' xlink:label='dei_DocumentTransitionReport'/>
		<link:definitionArc xlink:type='arc' xlink:arcrole='http://xbrl.org/int/dim/arcrole/domain-member' xlink:from='us-gaap_StatementLineItems' xlink:to='dei_DocumentTransitionReport' use='optional' order='8.0'/>
		<link:loc xlink:type='locator' xlink:href='https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_DocumentShellCompanyReport' xlink:label='dei_DocumentShellCompanyReport'/>
		<link:definitionArc xlink:type='arc' xlink:arcrole='http://xbrl.org/int/dim/arcrole/domain-member' xlink:from='us-gaap_StatementLineItems' xlink:to='dei_DocumentShellCompanyReport' use='optional' order='9.0'/>
		<link:loc xlink:type='locator' xlink:href='https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_EntityRegistrantName' xlink:label='dei_EntityRegistrantName'/>
		<link:definitionArc xlink:type='arc' xlink:arcrole='http://xbrl.org/int/dim/arcrole/domain-member' xlink:from='us-gaap_StatementLineItems' xlink:to='dei_EntityRegistrantName' use='optional' order='10.0'/>
		<link:loc xlink:type='locator' xlink:href='https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_EntityIncorporationStateCountryCode' xlink:label='dei_EntityIncorporationStateCountryCode'/>
		<link:definitionArc xlink:type='arc' xlink:arcrole='http://xbrl.org/int/dim/arcrole/domain-member' xlink:from='us-gaap_StatementLineItems' xlink:to='dei_EntityIncorporationStateCountryCode' use='optional' order='11.0'/>
		<link:loc xlink:type='locator' xlink:href='https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_EntityAddressAddressLine1' xlink:label='dei_EntityAddressAddressLine1'/>
		<link:definitionArc xlink:type='arc' xlink:arcrole='http://xbrl.org/int/dim/arcrole/domain-member' xlink:from='us-gaap_StatementLineItems' xlink:to='dei_EntityAddressAddressLine1' use='optional' order='12.0'/>
		<link:loc xlink:type='locator' xlink:href='https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_EntityAddressCityOrTown' xlink:label='dei_EntityAddressCityOrTown'/>
		<link:definitionArc xlink:type='arc' xlink:arcrole='http://xbrl.org/int/dim/arcrole/domain-member' xlink:from='us-gaap_StatementLineItems' xlink:to='dei_EntityAddressCityOrTown' use='optional' order='13.0'/>
		<link:loc xlink:type='locator' xlink:href='https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_EntityAddressStateOrProvince' xlink:label='dei_EntityAddressStateOrProvince'/>
		<link:definitionArc xlink:type='arc' xlink:arcrole='http://xbrl.org/int/dim/arcrole/domain-member' xlink:from='us-gaap_StatementLineItems' xlink:to='dei_EntityAddressStateOrProvince' use='optional' order='14.0'/>
		<link:loc xlink:type='locator' xlink:href='https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_EntityAddressPostalZipCode' xlink:label='dei_EntityAddressPostalZipCode'/>
		<link:definitionArc xlink:type='arc' xlink:arcrole='http://xbrl.org/int/dim/arcrole/domain-member' xlink:from='us-gaap_StatementLineItems' xlink:to='dei_EntityAddressPostalZipCode' use='optional' order='15.0'/>
		<link:loc xlink:type='locator' xlink:href='https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_EntityAddressCountry' xlink:label='dei_EntityAddressCountry'/>
		<link:definitionArc xlink:type='arc' xlink:arcrole='http://xbrl.org/int/dim/arcrole/domain-member' xlink:from='us-gaap_StatementLineItems' xlink:to='dei_EntityAddressCountry' use='optional' order='16.0'/>
		<link:loc xlink:type='locator' xlink:href='https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_EntityAddressAddressDescription' xlink:label='dei_EntityAddressAddressDescription'/>
		<link:definitionArc xlink:type='arc' xlink:arcrole='http://xbrl.org/int/dim/arcrole/domain-member' xlink:from='us-gaap_StatementLineItems' xlink:to='dei_EntityAddressAddressDescription' use='optional' order='17.0'/>
		<link:loc xlink:type='locator' xlink:href='https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_ContactPersonnelName' xlink:label='dei_ContactPersonnelName'/>
		<link:definitionArc xlink:type='arc' xlink:arcrole='http://xbrl.org/int/dim/arcrole/domain-member' xlink:from='us-gaap_StatementLineItems' xlink:to='dei_ContactPersonnelName' use='optional' order='18.0'/>
		<link:loc xlink:type='locator' xlink:href='https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_ContactPersonnelEmailAddress' xlink:label='dei_ContactPersonnelEmailAddress'/>
		<link:definitionArc xlink:type='arc' xlink:arcrole='http://xbrl.org/int/dim/arcrole/domain-member' xlink:from='us-gaap_StatementLineItems' xlink:to='dei_ContactPersonnelEmailAddress' use='optional' order='19.0'/>
		<link:loc xlink:type='locator' xlink:href='https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_ContactPersonnelFaxNumber' xlink:label='dei_ContactPersonnelFaxNumber'/>
		<link:definitionArc xlink:type='arc' xlink:arcrole='http://xbrl.org/int/dim/arcrole/domain-member' xlink:from='us-gaap_StatementLineItems' xlink:to='dei_ContactPersonnelFaxNumber' use='optional' order='20.0'/>
		<link:loc xlink:type='locator' xlink:href='https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_EntityFileNumber' xlink:label='dei_EntityFileNumber'/>
		<link:definitionArc xlink:type='arc' xlink:arcrole='http://xbrl.org/int/dim/arcrole/domain-member' xlink:from='us-gaap_StatementLineItems' xlink:to='dei_EntityFileNumber' use='optional' order='21.0'/>
		<link:loc xlink:type='locator' xlink:href='https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_EntityCommonStockSharesOutstanding' xlink:label='dei_EntityCommonStockSharesOutstanding'/>
		<link:definitionArc xlink:type='arc' xlink:arcrole='http://xbrl.org/int/dim/arcrole/domain-member' xlink:from='us-gaap_StatementLineItems' xlink:to='dei_EntityCommonStockSharesOutstanding' use='optional' order='22.0'/>
		<link:loc xlink:type='locator' xlink:href='https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_EntityWellKnownSeasonedIssuer' xlink:label='dei_EntityWellKnownSeasonedIssuer'/>
		<link:definitionArc xlink:type='arc' xlink:arcrole='http://xbrl.org/int/dim/arcrole/domain-member' xlink:from='us-gaap_StatementLineItems' xlink:to='dei_EntityWellKnownSeasonedIssuer' use='optional' order='23.0'/>
		<link:loc xlink:type='locator' xlink:href='https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_EntityVoluntaryFilers' xlink:label='dei_EntityVoluntaryFilers'/>
		<link:definitionArc xlink:type='arc' xlink:arcrole='http://xbrl.org/int/dim/arcrole/domain-member' xlink:from='us-gaap_StatementLineItems' xlink:to='dei_EntityVoluntaryFilers' use='optional' order='24.0'/>
		<link:loc xlink:type='locator' xlink:href='https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_EntityCurrentReportingStatus' xlink:label='dei_EntityCurrentReportingStatus'/>
		<link:definitionArc xlink:type='arc' xlink:arcrole='http://xbrl.org/int/dim/arcrole/domain-member' xlink:from='us-gaap_StatementLineItems' xlink:to='dei_EntityCurrentReportingStatus' use='optional' order='25.0'/>
		<link:loc xlink:type='locator' xlink:href='https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_EntityInteractiveDataCurrent' xlink:label='dei_EntityInteractiveDataCurrent'/>
		<link:definitionArc xlink:type='arc' xlink:arcrole='http://xbrl.org/int/dim/arcrole/domain-member' xlink:from='us-gaap_StatementLineItems' xlink:to='dei_EntityInteractiveDataCurrent' use='optional' order='26.0'/>
		<link:loc xlink:type='locator' xlink:href='https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_EntityFilerCategory' xlink:label='dei_EntityFilerCategory'/>
		<link:definitionArc xlink:type='arc' xlink:arcrole='http://xbrl.org/int/dim/arcrole/domain-member' xlink:from='us-gaap_StatementLineItems' xlink:to='dei_EntityFilerCategory' use='optional' order='27.0'/>
		<link:loc xlink:type='locator' xlink:href='https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_EntityEmergingGrowthCompany' xlink:label='dei_EntityEmergingGrowthCompany'/>
		<link:definitionArc xlink:type='arc' xlink:arcrole='http://xbrl.org/int/dim/arcrole/domain-member' xlink:from='us-gaap_StatementLineItems' xlink:to='dei_EntityEmergingGrowthCompany' use='optional' order='28.0'/>
		<link:loc xlink:type='locator' xlink:href='https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_IcfrAuditorAttestationFlag' xlink:label='dei_IcfrAuditorAttestationFlag'/>
		<link:definitionArc xlink:type='arc' xlink:arcrole='http://xbrl.org/int/dim/arcrole/domain-member' xlink:from='us-gaap_StatementLineItems' xlink:to='dei_IcfrAuditorAttestationFlag' use='optional' order='29.0'/>
		<link:loc xlink:type='locator' xlink:href='https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_DocumentFinStmtErrorCorrectionFlag' xlink:label='dei_DocumentFinStmtErrorCorrectionFlag'/>
		<link:definitionArc xlink:type='arc' xlink:arcrole='http://xbrl.org/int/dim/arcrole/domain-member' xlink:from='us-gaap_StatementLineItems' xlink:to='dei_DocumentFinStmtErrorCorrectionFlag' use='optional' order='30.0'/>
		<link:loc xlink:type='locator' xlink:href='https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_EntityAccountingStandard' xlink:label='dei_EntityAccountingStandard'/>
		<link:definitionArc xlink:type='arc' xlink:arcrole='http://xbrl.org/int/dim/arcrole/domain-member' xlink:from='us-gaap_StatementLineItems' xlink:to='dei_EntityAccountingStandard' use='optional' order='31.0'/>
		<link:loc xlink:type='locator' xlink:href='https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_DocumentAccountingStandard' xlink:label='dei_DocumentAccountingStandard'/>
		<link:definitionArc xlink:type='arc' xlink:arcrole='http://xbrl.org/int/dim/arcrole/domain-member' xlink:from='us-gaap_StatementLineItems' xlink:to='dei_DocumentAccountingStandard' use='optional' order='32.0'/>
		<link:loc xlink:type='locator' xlink:href='https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_EntityShellCompany' xlink:label='dei_EntityShellCompany'/>
		<link:definitionArc xlink:type='arc' xlink:arcrole='http://xbrl.org/int/dim/arcrole/domain-member' xlink:from='us-gaap_StatementLineItems' xlink:to='dei_EntityShellCompany' use='optional' order='33.0'/>
		<link:loc xlink:type='locator' xlink:href='https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_AmendmentFlag' xlink:label='dei_AmendmentFlag'/>
		<link:definitionArc xlink:type='arc' xlink:arcrole='http://xbrl.org/int/dim/arcrole/domain-member' xlink:from='us-gaap_StatementLineItems' xlink:to='dei_AmendmentFlag' use='optional' order='34.0'/>
		<link:loc xlink:type='locator' xlink:href='https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_DocumentFiscalYearFocus' xlink:label='dei_DocumentFiscalYearFocus'/>
		<link:definitionArc xlink:type='arc' xlink:arcrole='http://xbrl.org/int/dim/arcrole/domain-member' xlink:from='us-gaap_StatementLineItems' xlink:to='dei_DocumentFiscalYearFocus' use='optional' order='35.0'/>
		<link:loc xlink:type='locator' xlink:href='https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_DocumentFiscalPeriodFocus' xlink:label='dei_DocumentFiscalPeriodFocus'/>
		<link:definitionArc xlink:type='arc' xlink:arcrole='http://xbrl.org/int/dim/arcrole/domain-member' xlink:from='us-gaap_StatementLineItems' xlink:to='dei_DocumentFiscalPeriodFocus' use='optional' order='36.0'/>
		<link:loc xlink:type='locator' xlink:href='https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_AuditorName' xlink:label='dei_AuditorName'/>
		<link:definitionArc xlink:type='arc' xlink:arcrole='http://xbrl.org/int/dim/arcrole/domain-member' xlink:from='us-gaap_StatementLineItems' xlink:to='dei_AuditorName' use='optional' order='37.0'/>
		<link:loc xlink:type='locator' xlink:href='https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_AuditorFirmId' xlink:label='dei_AuditorFirmId'/>
		<link:definitionArc xlink:type='arc' xlink:arcrole='http://xbrl.org/int/dim/arcrole/domain-member' xlink:from='us-gaap_StatementLineItems' xlink:to='dei_AuditorFirmId' use='optional' order='38.0'/>
		<link:loc xlink:type='locator' xlink:href='https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_AuditorLocation' xlink:label='dei_AuditorLocation'/>
		<link:definitionArc xlink:type='arc' xlink:arcrole='http://xbrl.org/int/dim/arcrole/domain-member' xlink:from='us-gaap_StatementLineItems' xlink:to='dei_AuditorLocation' use='optional' order='39.0'/>
	</link:definitionLink>
	<link:roleRef roleURI="http://www.pacificbooker.com/20260131/role/idr_StatementStatementsOfFinancialPosition" xlink:type="simple" xlink:href="pbmlf-20260131.xsd#idr_StatementStatementsOfFinancialPosition"/>
	<link:definitionLink xlink:type="extended" xlink:role="http://www.pacificbooker.com/20260131/role/idr_StatementStatementsOfFinancialPosition"/>
	<link:roleRef roleURI="http://www.pacificbooker.com/20260131/role/idr_StatementStatementsOfNetLossAndComprehensiveLoss" xlink:type="simple" xlink:href="pbmlf-20260131.xsd#idr_StatementStatementsOfNetLossAndComprehensiveLoss"/>
	<link:definitionLink xlink:type="extended" xlink:role="http://www.pacificbooker.com/20260131/role/idr_StatementStatementsOfNetLossAndComprehensiveLoss"/>
	<link:roleRef roleURI="http://www.pacificbooker.com/20260131/role/idr_StatementStatementsOfChangesInEquity" xlink:type="simple" xlink:href="pbmlf-20260131.xsd#idr_StatementStatementsOfChangesInEquity"/>
	<link:definitionLink xlink:type="extended" xlink:role="http://www.pacificbooker.com/20260131/role/idr_StatementStatementsOfChangesInEquity">
		<link:loc xlink:type='locator' xlink:href='https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_StatementTable' xlink:label='us-gaap_StatementTable'/>
		<link:loc xlink:type='locator' xlink:href='https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_ComponentsOfEquityAxis' xlink:label='ifrs-full_ComponentsOfEquityAxis'/>
		<link:definitionArc xlink:type='arc' xlink:arcrole='http://xbrl.org/int/dim/arcrole/hypercube-dimension' xlink:from='us-gaap_StatementTable' xlink:to='ifrs-full_ComponentsOfEquityAxis' use='optional' order='1.0' xbrldt:contextElement='segment'/>
		<link:loc xlink:type='locator' xlink:href='https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_ComponentsOfEquityDomain' xlink:label='ifrs-full_ComponentsOfEquityDomain'/>
		<link:definitionArc xlink:type='arc' xlink:arcrole='http://xbrl.org/int/dim/arcrole/dimension-domain' xlink:from='ifrs-full_ComponentsOfEquityAxis' xlink:to='ifrs-full_ComponentsOfEquityDomain' use='optional' order='1.0'/>
		<link:loc xlink:type='locator' xlink:href='https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_ComponentsOfEquityDomain' xlink:label='ifrs-full_ComponentsOfEquityDomain_1'/>
		<link:definitionArc xlink:type='arc' xlink:arcrole='http://xbrl.org/int/dim/arcrole/dimension-default' xlink:from='ifrs-full_ComponentsOfEquityAxis' xlink:to='ifrs-full_ComponentsOfEquityDomain_1' use='optional' order='1.0' xbrldt:contextElement='segment'/>
		<link:loc xlink:type='locator' xlink:href='https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_IssuedCapitalMember' xlink:label='ifrs-full_IssuedCapitalMember'/>
		<link:definitionArc xlink:type='arc' xlink:arcrole='http://xbrl.org/int/dim/arcrole/domain-member' xlink:from='ifrs-full_ComponentsOfEquityDomain' xlink:to='ifrs-full_IssuedCapitalMember' use='optional' order='1.0'/>
		<link:loc xlink:type='locator' xlink:href='https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_RevaluationSurplusMember' xlink:label='ifrs-full_RevaluationSurplusMember'/>
		<link:definitionArc xlink:type='arc' xlink:arcrole='http://xbrl.org/int/dim/arcrole/domain-member' xlink:from='ifrs-full_ComponentsOfEquityDomain' xlink:to='ifrs-full_RevaluationSurplusMember' use='optional' order='2.0'/>
		<link:loc xlink:type='locator' xlink:href='https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_RetainedEarningsMember' xlink:label='ifrs-full_RetainedEarningsMember'/>
		<link:definitionArc xlink:type='arc' xlink:arcrole='http://xbrl.org/int/dim/arcrole/domain-member' xlink:from='ifrs-full_ComponentsOfEquityDomain' xlink:to='ifrs-full_RetainedEarningsMember' use='optional' order='3.0'/>
		<link:loc xlink:type='locator' xlink:href='https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_StatementLineItems' xlink:label='us-gaap_StatementLineItems'/>
		<link:definitionArc xlink:type='arc' xlink:arcrole='http://xbrl.org/int/dim/arcrole/all' xlink:from='us-gaap_StatementLineItems' xlink:to='us-gaap_StatementTable' order='0.5' xbrldt:closed='true' xbrldt:contextElement='segment' use='optional'/>
		<link:loc xlink:type='locator' xlink:href='https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_Equity' xlink:label='ifrs-full_Equity'/>
		<link:definitionArc xlink:type='arc' xlink:arcrole='http://xbrl.org/int/dim/arcrole/domain-member' xlink:from='us-gaap_StatementLineItems' xlink:to='ifrs-full_Equity' use='optional' order='1.0'/>
		<link:loc xlink:type='locator' xlink:href='https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_NumberOfSharesOutstanding' xlink:label='ifrs-full_NumberOfSharesOutstanding'/>
		<link:definitionArc xlink:type='arc' xlink:arcrole='http://xbrl.org/int/dim/arcrole/domain-member' xlink:from='us-gaap_StatementLineItems' xlink:to='ifrs-full_NumberOfSharesOutstanding' use='optional' order='2.0'/>
		<link:loc xlink:type='locator' xlink:href='https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_AdjustmentsForSharebasedPayments' xlink:label='ifrs-full_AdjustmentsForSharebasedPayments'/>
		<link:definitionArc xlink:type='arc' xlink:arcrole='http://xbrl.org/int/dim/arcrole/domain-member' xlink:from='us-gaap_StatementLineItems' xlink:to='ifrs-full_AdjustmentsForSharebasedPayments' use='optional' order='3.0'/>
		<link:loc xlink:type='locator' xlink:href='https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_ProfitLoss' xlink:label='ifrs-full_ProfitLoss'/>
		<link:definitionArc xlink:type='arc' xlink:arcrole='http://xbrl.org/int/dim/arcrole/domain-member' xlink:from='us-gaap_StatementLineItems' xlink:to='ifrs-full_ProfitLoss' use='optional' order='4.0'/>
	</link:definitionLink>
	<link:roleRef roleURI="http://www.pacificbooker.com/20260131/role/idr_StatementStatementsOfCashFlows" xlink:type="simple" xlink:href="pbmlf-20260131.xsd#idr_StatementStatementsOfCashFlows"/>
	<link:definitionLink xlink:type="extended" xlink:role="http://www.pacificbooker.com/20260131/role/idr_StatementStatementsOfCashFlows"/>
	<link:roleRef roleURI="http://www.pacificbooker.com/20260131/role/idr_Disclosure1CorporateInformation" xlink:type="simple" xlink:href="pbmlf-20260131.xsd#idr_Disclosure1CorporateInformation"/>
	<link:definitionLink xlink:type="extended" xlink:role="http://www.pacificbooker.com/20260131/role/idr_Disclosure1CorporateInformation"/>
	<link:roleRef roleURI="http://www.pacificbooker.com/20260131/role/idr_Disclosure2BasisOfPresentation" xlink:type="simple" xlink:href="pbmlf-20260131.xsd#idr_Disclosure2BasisOfPresentation"/>
	<link:definitionLink xlink:type="extended" xlink:role="http://www.pacificbooker.com/20260131/role/idr_Disclosure2BasisOfPresentation"/>
	<link:roleRef roleURI="http://www.pacificbooker.com/20260131/role/idr_Disclosure3SummaryOfMaterialAccountingPolicyInformation" xlink:type="simple" xlink:href="pbmlf-20260131.xsd#idr_Disclosure3SummaryOfMaterialAccountingPolicyInformation"/>
	<link:definitionLink xlink:type="extended" xlink:role="http://www.pacificbooker.com/20260131/role/idr_Disclosure3SummaryOfMaterialAccountingPolicyInformation"/>
	<link:roleRef roleURI="http://www.pacificbooker.com/20260131/role/idr_Disclosure4AccountingStandardsIssuedButNotYetEffective" xlink:type="simple" xlink:href="pbmlf-20260131.xsd#idr_Disclosure4AccountingStandardsIssuedButNotYetEffective"/>
	<link:definitionLink xlink:type="extended" xlink:role="http://www.pacificbooker.com/20260131/role/idr_Disclosure4AccountingStandardsIssuedButNotYetEffective"/>
	<link:roleRef roleURI="http://www.pacificbooker.com/20260131/role/idr_Disclosure5ExplorationAndEvaluationAssets" xlink:type="simple" xlink:href="pbmlf-20260131.xsd#idr_Disclosure5ExplorationAndEvaluationAssets"/>
	<link:definitionLink xlink:type="extended" xlink:role="http://www.pacificbooker.com/20260131/role/idr_Disclosure5ExplorationAndEvaluationAssets"/>
	<link:roleRef roleURI="http://www.pacificbooker.com/20260131/role/idr_Disclosure6EquipmentVehiclesAndFurniture" xlink:type="simple" xlink:href="pbmlf-20260131.xsd#idr_Disclosure6EquipmentVehiclesAndFurniture"/>
	<link:definitionLink xlink:type="extended" xlink:role="http://www.pacificbooker.com/20260131/role/idr_Disclosure6EquipmentVehiclesAndFurniture"/>
	<link:roleRef roleURI="http://www.pacificbooker.com/20260131/role/idr_Disclosure7OfficeLeaseRightOfUseOfficeLeaseLiability" xlink:type="simple" xlink:href="pbmlf-20260131.xsd#idr_Disclosure7OfficeLeaseRightOfUseOfficeLeaseLiability"/>
	<link:definitionLink xlink:type="extended" xlink:role="http://www.pacificbooker.com/20260131/role/idr_Disclosure7OfficeLeaseRightOfUseOfficeLeaseLiability"/>
	<link:roleRef roleURI="http://www.pacificbooker.com/20260131/role/idr_Disclosure8ShareCapitalOptionBasedPaymentsContributedSurplus" xlink:type="simple" xlink:href="pbmlf-20260131.xsd#idr_Disclosure8ShareCapitalOptionBasedPaymentsContributedSurplus"/>
	<link:definitionLink xlink:type="extended" xlink:role="http://www.pacificbooker.com/20260131/role/idr_Disclosure8ShareCapitalOptionBasedPaymentsContributedSurplus"/>
	<link:roleRef roleURI="http://www.pacificbooker.com/20260131/role/idr_Disclosure9LossPerShare" xlink:type="simple" xlink:href="pbmlf-20260131.xsd#idr_Disclosure9LossPerShare"/>
	<link:definitionLink xlink:type="extended" xlink:role="http://www.pacificbooker.com/20260131/role/idr_Disclosure9LossPerShare"/>
	<link:roleRef roleURI="http://www.pacificbooker.com/20260131/role/idr_Disclosure10TransactionsWithAndAmountsOwingToRelatedParties" xlink:type="simple" xlink:href="pbmlf-20260131.xsd#idr_Disclosure10TransactionsWithAndAmountsOwingToRelatedParties"/>
	<link:definitionLink xlink:type="extended" xlink:role="http://www.pacificbooker.com/20260131/role/idr_Disclosure10TransactionsWithAndAmountsOwingToRelatedParties"/>
	<link:roleRef roleURI="http://www.pacificbooker.com/20260131/role/idr_Disclosure11SupplementalDisclosureWithRespectToCashFlows" xlink:type="simple" xlink:href="pbmlf-20260131.xsd#idr_Disclosure11SupplementalDisclosureWithRespectToCashFlows"/>
	<link:definitionLink xlink:type="extended" xlink:role="http://www.pacificbooker.com/20260131/role/idr_Disclosure11SupplementalDisclosureWithRespectToCashFlows"/>
	<link:roleRef roleURI="http://www.pacificbooker.com/20260131/role/idr_Disclosure12IncomeTaxes" xlink:type="simple" xlink:href="pbmlf-20260131.xsd#idr_Disclosure12IncomeTaxes"/>
	<link:definitionLink xlink:type="extended" xlink:role="http://www.pacificbooker.com/20260131/role/idr_Disclosure12IncomeTaxes"/>
	<link:roleRef roleURI="http://www.pacificbooker.com/20260131/role/idr_Disclosure13Commitment" xlink:type="simple" xlink:href="pbmlf-20260131.xsd#idr_Disclosure13Commitment"/>
	<link:definitionLink xlink:type="extended" xlink:role="http://www.pacificbooker.com/20260131/role/idr_Disclosure13Commitment"/>
	<link:roleRef roleURI="http://www.pacificbooker.com/20260131/role/idr_Disclosure14SegmentedInformation" xlink:type="simple" xlink:href="pbmlf-20260131.xsd#idr_Disclosure14SegmentedInformation"/>
	<link:definitionLink xlink:type="extended" xlink:role="http://www.pacificbooker.com/20260131/role/idr_Disclosure14SegmentedInformation"/>
	<link:roleRef roleURI="http://www.pacificbooker.com/20260131/role/idr_Disclosure15FinancialInstrumentsFinancialRiskManagement" xlink:type="simple" xlink:href="pbmlf-20260131.xsd#idr_Disclosure15FinancialInstrumentsFinancialRiskManagement"/>
	<link:definitionLink xlink:type="extended" xlink:role="http://www.pacificbooker.com/20260131/role/idr_Disclosure15FinancialInstrumentsFinancialRiskManagement"/>
	<link:roleRef roleURI="http://www.pacificbooker.com/20260131/role/idr_Disclosure16CapitalManagement" xlink:type="simple" xlink:href="pbmlf-20260131.xsd#idr_Disclosure16CapitalManagement"/>
	<link:definitionLink xlink:type="extended" xlink:role="http://www.pacificbooker.com/20260131/role/idr_Disclosure16CapitalManagement"/>
	<link:roleRef roleURI="http://www.pacificbooker.com/20260131/role/idr_Disclosure17SubsequentEvents" xlink:type="simple" xlink:href="pbmlf-20260131.xsd#idr_Disclosure17SubsequentEvents"/>
	<link:definitionLink xlink:type="extended" xlink:role="http://www.pacificbooker.com/20260131/role/idr_Disclosure17SubsequentEvents"/>
	<link:roleRef roleURI="http://www.pacificbooker.com/20260131/role/idr_Disclosure2BasisOfPresentationAStatementOfCompliancePolicies" xlink:type="simple" xlink:href="pbmlf-20260131.xsd#idr_Disclosure2BasisOfPresentationAStatementOfCompliancePolicies"/>
	<link:definitionLink xlink:type="extended" xlink:role="http://www.pacificbooker.com/20260131/role/idr_Disclosure2BasisOfPresentationAStatementOfCompliancePolicies"/>
	<link:roleRef roleURI="http://www.pacificbooker.com/20260131/role/idr_Disclosure2BasisOfPresentationBGoingConcernOfOperationsPolicies" xlink:type="simple" xlink:href="pbmlf-20260131.xsd#idr_Disclosure2BasisOfPresentationBGoingConcernOfOperationsPolicies"/>
	<link:definitionLink xlink:type="extended" xlink:role="http://www.pacificbooker.com/20260131/role/idr_Disclosure2BasisOfPresentationBGoingConcernOfOperationsPolicies"/>
	<link:roleRef roleURI="http://www.pacificbooker.com/20260131/role/idr_Disclosure2BasisOfPresentationCBasisOfMeasurementPolicies" xlink:type="simple" xlink:href="pbmlf-20260131.xsd#idr_Disclosure2BasisOfPresentationCBasisOfMeasurementPolicies"/>
	<link:definitionLink xlink:type="extended" xlink:role="http://www.pacificbooker.com/20260131/role/idr_Disclosure2BasisOfPresentationCBasisOfMeasurementPolicies"/>
	<link:roleRef roleURI="http://www.pacificbooker.com/20260131/role/idr_Disclosure2BasisOfPresentationDFunctionalAndPresentationCurrencyPolicies" xlink:type="simple" xlink:href="pbmlf-20260131.xsd#idr_Disclosure2BasisOfPresentationDFunctionalAndPresentationCurrencyPolicies"/>
	<link:definitionLink xlink:type="extended" xlink:role="http://www.pacificbooker.com/20260131/role/idr_Disclosure2BasisOfPresentationDFunctionalAndPresentationCurrencyPolicies"/>
	<link:roleRef roleURI="http://www.pacificbooker.com/20260131/role/idr_Disclosure2BasisOfPresentationECriticalAccountingJudgementsPolicies" xlink:type="simple" xlink:href="pbmlf-20260131.xsd#idr_Disclosure2BasisOfPresentationECriticalAccountingJudgementsPolicies"/>
	<link:definitionLink xlink:type="extended" xlink:role="http://www.pacificbooker.com/20260131/role/idr_Disclosure2BasisOfPresentationECriticalAccountingJudgementsPolicies"/>
	<link:roleRef roleURI="http://www.pacificbooker.com/20260131/role/idr_Disclosure2BasisOfPresentationFKeySourcesOfEstimationUncertaintyPolicies" xlink:type="simple" xlink:href="pbmlf-20260131.xsd#idr_Disclosure2BasisOfPresentationFKeySourcesOfEstimationUncertaintyPolicies"/>
	<link:definitionLink xlink:type="extended" xlink:role="http://www.pacificbooker.com/20260131/role/idr_Disclosure2BasisOfPresentationFKeySourcesOfEstimationUncertaintyPolicies"/>
	<link:roleRef roleURI="http://www.pacificbooker.com/20260131/role/idr_Disclosure3SummaryOfMaterialAccountingPolicyInformationAForeignCurrencyTranslationPolicies" xlink:type="simple" xlink:href="pbmlf-20260131.xsd#idr_Disclosure3SummaryOfMaterialAccountingPolicyInformationAForeignCurrencyTranslationPolicies"/>
	<link:definitionLink xlink:type="extended" xlink:role="http://www.pacificbooker.com/20260131/role/idr_Disclosure3SummaryOfMaterialAccountingPolicyInformationAForeignCurrencyTranslationPolicies"/>
	<link:roleRef roleURI="http://www.pacificbooker.com/20260131/role/idr_Disclosure3SummaryOfMaterialAccountingPolicyInformationBCashAndCashEquivalentsPolicies" xlink:type="simple" xlink:href="pbmlf-20260131.xsd#idr_Disclosure3SummaryOfMaterialAccountingPolicyInformationBCashAndCashEquivalentsPolicies"/>
	<link:definitionLink xlink:type="extended" xlink:role="http://www.pacificbooker.com/20260131/role/idr_Disclosure3SummaryOfMaterialAccountingPolicyInformationBCashAndCashEquivalentsPolicies"/>
	<link:roleRef roleURI="http://www.pacificbooker.com/20260131/role/idr_Disclosure3SummaryOfMaterialAccountingPolicyInformationCMineralPropertyInterestsAndExplorationAndEvaluationAssetsPolicies" xlink:type="simple" xlink:href="pbmlf-20260131.xsd#idr_Disclosure3SummaryOfMaterialAccountingPolicyInformationCMineralPropertyInterestsAndExplorationAndEvaluationAssetsPolicies"/>
	<link:definitionLink xlink:type="extended" xlink:role="http://www.pacificbooker.com/20260131/role/idr_Disclosure3SummaryOfMaterialAccountingPolicyInformationCMineralPropertyInterestsAndExplorationAndEvaluationAssetsPolicies"/>
	<link:roleRef roleURI="http://www.pacificbooker.com/20260131/role/idr_Disclosure3SummaryOfMaterialAccountingPolicyInformationDImpairmentPolicies" xlink:type="simple" xlink:href="pbmlf-20260131.xsd#idr_Disclosure3SummaryOfMaterialAccountingPolicyInformationDImpairmentPolicies"/>
	<link:definitionLink xlink:type="extended" xlink:role="http://www.pacificbooker.com/20260131/role/idr_Disclosure3SummaryOfMaterialAccountingPolicyInformationDImpairmentPolicies"/>
	<link:roleRef roleURI="http://www.pacificbooker.com/20260131/role/idr_Disclosure3SummaryOfMaterialAccountingPolicyInformationERestorationAndCloseDownProvisionPolicies" xlink:type="simple" xlink:href="pbmlf-20260131.xsd#idr_Disclosure3SummaryOfMaterialAccountingPolicyInformationERestorationAndCloseDownProvisionPolicies"/>
	<link:definitionLink xlink:type="extended" xlink:role="http://www.pacificbooker.com/20260131/role/idr_Disclosure3SummaryOfMaterialAccountingPolicyInformationERestorationAndCloseDownProvisionPolicies"/>
	<link:roleRef roleURI="http://www.pacificbooker.com/20260131/role/idr_Disclosure3SummaryOfMaterialAccountingPolicyInformationFEquipmentVehiclesAndFurniturePolicies" xlink:type="simple" xlink:href="pbmlf-20260131.xsd#idr_Disclosure3SummaryOfMaterialAccountingPolicyInformationFEquipmentVehiclesAndFurniturePolicies"/>
	<link:definitionLink xlink:type="extended" xlink:role="http://www.pacificbooker.com/20260131/role/idr_Disclosure3SummaryOfMaterialAccountingPolicyInformationFEquipmentVehiclesAndFurniturePolicies"/>
	<link:roleRef roleURI="http://www.pacificbooker.com/20260131/role/idr_Disclosure3SummaryOfMaterialAccountingPolicyInformationGOptionBasedPaymentsPolicies" xlink:type="simple" xlink:href="pbmlf-20260131.xsd#idr_Disclosure3SummaryOfMaterialAccountingPolicyInformationGOptionBasedPaymentsPolicies"/>
	<link:definitionLink xlink:type="extended" xlink:role="http://www.pacificbooker.com/20260131/role/idr_Disclosure3SummaryOfMaterialAccountingPolicyInformationGOptionBasedPaymentsPolicies"/>
	<link:roleRef roleURI="http://www.pacificbooker.com/20260131/role/idr_Disclosure3SummaryOfMaterialAccountingPolicyInformationHPrivatePlacementUnitOfferingsPolicies" xlink:type="simple" xlink:href="pbmlf-20260131.xsd#idr_Disclosure3SummaryOfMaterialAccountingPolicyInformationHPrivatePlacementUnitOfferingsPolicies"/>
	<link:definitionLink xlink:type="extended" xlink:role="http://www.pacificbooker.com/20260131/role/idr_Disclosure3SummaryOfMaterialAccountingPolicyInformationHPrivatePlacementUnitOfferingsPolicies"/>
	<link:roleRef roleURI="http://www.pacificbooker.com/20260131/role/idr_Disclosure3SummaryOfMaterialAccountingPolicyInformationILossPerSharePolicies" xlink:type="simple" xlink:href="pbmlf-20260131.xsd#idr_Disclosure3SummaryOfMaterialAccountingPolicyInformationILossPerSharePolicies"/>
	<link:definitionLink xlink:type="extended" xlink:role="http://www.pacificbooker.com/20260131/role/idr_Disclosure3SummaryOfMaterialAccountingPolicyInformationILossPerSharePolicies"/>
	<link:roleRef roleURI="http://www.pacificbooker.com/20260131/role/idr_Disclosure3SummaryOfMaterialAccountingPolicyInformationJIncomeTaxesPolicies" xlink:type="simple" xlink:href="pbmlf-20260131.xsd#idr_Disclosure3SummaryOfMaterialAccountingPolicyInformationJIncomeTaxesPolicies"/>
	<link:definitionLink xlink:type="extended" xlink:role="http://www.pacificbooker.com/20260131/role/idr_Disclosure3SummaryOfMaterialAccountingPolicyInformationJIncomeTaxesPolicies"/>
	<link:roleRef roleURI="http://www.pacificbooker.com/20260131/role/idr_Disclosure3SummaryOfMaterialAccountingPolicyInformationKFinancialInstrumentsPolicies" xlink:type="simple" xlink:href="pbmlf-20260131.xsd#idr_Disclosure3SummaryOfMaterialAccountingPolicyInformationKFinancialInstrumentsPolicies"/>
	<link:definitionLink xlink:type="extended" xlink:role="http://www.pacificbooker.com/20260131/role/idr_Disclosure3SummaryOfMaterialAccountingPolicyInformationKFinancialInstrumentsPolicies"/>
	<link:roleRef roleURI="http://www.pacificbooker.com/20260131/role/idr_Disclosure3SummaryOfMaterialAccountingPolicyInformationLEquityInstrumentsPolicies" xlink:type="simple" xlink:href="pbmlf-20260131.xsd#idr_Disclosure3SummaryOfMaterialAccountingPolicyInformationLEquityInstrumentsPolicies"/>
	<link:definitionLink xlink:type="extended" xlink:role="http://www.pacificbooker.com/20260131/role/idr_Disclosure3SummaryOfMaterialAccountingPolicyInformationLEquityInstrumentsPolicies"/>
	<link:roleRef roleURI="http://www.pacificbooker.com/20260131/role/idr_Disclosure3SummaryOfMaterialAccountingPolicyInformationMRightOfUseAssetsAndLeaseLiabilitiesPolicies" xlink:type="simple" xlink:href="pbmlf-20260131.xsd#idr_Disclosure3SummaryOfMaterialAccountingPolicyInformationMRightOfUseAssetsAndLeaseLiabilitiesPolicies"/>
	<link:definitionLink xlink:type="extended" xlink:role="http://www.pacificbooker.com/20260131/role/idr_Disclosure3SummaryOfMaterialAccountingPolicyInformationMRightOfUseAssetsAndLeaseLiabilitiesPolicies"/>
	<link:roleRef roleURI="http://www.pacificbooker.com/20260131/role/idr_Disclosure3SummaryOfMaterialAccountingPolicyInformationNProvisionsPolicies" xlink:type="simple" xlink:href="pbmlf-20260131.xsd#idr_Disclosure3SummaryOfMaterialAccountingPolicyInformationNProvisionsPolicies"/>
	<link:definitionLink xlink:type="extended" xlink:role="http://www.pacificbooker.com/20260131/role/idr_Disclosure3SummaryOfMaterialAccountingPolicyInformationNProvisionsPolicies"/>
	<link:roleRef roleURI="http://www.pacificbooker.com/20260131/role/idr_Disclosure3SummaryOfMaterialAccountingPolicyInformationOFinanceCostsPolicies" xlink:type="simple" xlink:href="pbmlf-20260131.xsd#idr_Disclosure3SummaryOfMaterialAccountingPolicyInformationOFinanceCostsPolicies"/>
	<link:definitionLink xlink:type="extended" xlink:role="http://www.pacificbooker.com/20260131/role/idr_Disclosure3SummaryOfMaterialAccountingPolicyInformationOFinanceCostsPolicies"/>
	<link:roleRef roleURI="http://www.pacificbooker.com/20260131/role/idr_Disclosure2BasisOfPresentationBGoingConcernOfOperationsScheduleOfWorkingCapitalLossAndDeficitTables" xlink:type="simple" xlink:href="pbmlf-20260131.xsd#idr_Disclosure2BasisOfPresentationBGoingConcernOfOperationsScheduleOfWorkingCapitalLossAndDeficitTables"/>
	<link:definitionLink xlink:type="extended" xlink:role="http://www.pacificbooker.com/20260131/role/idr_Disclosure2BasisOfPresentationBGoingConcernOfOperationsScheduleOfWorkingCapitalLossAndDeficitTables"/>
	<link:roleRef roleURI="http://www.pacificbooker.com/20260131/role/idr_Disclosure3SummaryOfMaterialAccountingPolicyInformationFEquipmentVehiclesAndFurnitureScheduleOfAnnualDepreciationOfEquipmentVehiclesAndFurnitureTables" xlink:type="simple" xlink:href="pbmlf-20260131.xsd#idr_Disclosure3SummaryOfMaterialAccountingPolicyInformationFEquipmentVehiclesAndFurnitureScheduleOfAnnualDepreciationOfEquipmentVehiclesAndFurnitureTables"/>
	<link:definitionLink xlink:type="extended" xlink:role="http://www.pacificbooker.com/20260131/role/idr_Disclosure3SummaryOfMaterialAccountingPolicyInformationFEquipmentVehiclesAndFurnitureScheduleOfAnnualDepreciationOfEquipmentVehiclesAndFurnitureTables"/>
	<link:roleRef roleURI="http://www.pacificbooker.com/20260131/role/idr_Disclosure3SummaryOfMaterialAccountingPolicyInformationMRightOfUseAssetsAndLeaseLiabilitiesScheduleOfExpectedLifeAndResidualValuesForTheCompanySRightOfUseAssetTables" xlink:type="simple" xlink:href="pbmlf-20260131.xsd#idr_Disclosure3SummaryOfMaterialAccountingPolicyInformationMRightOfUseAssetsAndLeaseLiabilitiesScheduleOfExpectedLifeAndResidualValuesForTheCompanySRightOfUseAssetTables"/>
	<link:definitionLink xlink:type="extended" xlink:role="http://www.pacificbooker.com/20260131/role/idr_Disclosure3SummaryOfMaterialAccountingPolicyInformationMRightOfUseAssetsAndLeaseLiabilitiesScheduleOfExpectedLifeAndResidualValuesForTheCompanySRightOfUseAssetTables"/>
	<link:roleRef roleURI="http://www.pacificbooker.com/20260131/role/idr_Disclosure5ExplorationAndEvaluationAssetsScheduleOfMorrisonClaimsAcquisitionCostTables" xlink:type="simple" xlink:href="pbmlf-20260131.xsd#idr_Disclosure5ExplorationAndEvaluationAssetsScheduleOfMorrisonClaimsAcquisitionCostTables"/>
	<link:definitionLink xlink:type="extended" xlink:role="http://www.pacificbooker.com/20260131/role/idr_Disclosure5ExplorationAndEvaluationAssetsScheduleOfMorrisonClaimsAcquisitionCostTables"/>
	<link:roleRef roleURI="http://www.pacificbooker.com/20260131/role/idr_Disclosure5ExplorationAndEvaluationAssetsScheduleOfMorrisonClaimsTables" xlink:type="simple" xlink:href="pbmlf-20260131.xsd#idr_Disclosure5ExplorationAndEvaluationAssetsScheduleOfMorrisonClaimsTables"/>
	<link:definitionLink xlink:type="extended" xlink:role="http://www.pacificbooker.com/20260131/role/idr_Disclosure5ExplorationAndEvaluationAssetsScheduleOfMorrisonClaimsTables"/>
	<link:roleRef roleURI="http://www.pacificbooker.com/20260131/role/idr_Disclosure6EquipmentVehiclesAndFurnitureScheduleOfEquipmentVehiclesAndFurnitureTables" xlink:type="simple" xlink:href="pbmlf-20260131.xsd#idr_Disclosure6EquipmentVehiclesAndFurnitureScheduleOfEquipmentVehiclesAndFurnitureTables"/>
	<link:definitionLink xlink:type="extended" xlink:role="http://www.pacificbooker.com/20260131/role/idr_Disclosure6EquipmentVehiclesAndFurnitureScheduleOfEquipmentVehiclesAndFurnitureTables"/>
	<link:roleRef roleURI="http://www.pacificbooker.com/20260131/role/idr_Disclosure7OfficeLeaseRightOfUseOfficeLeaseLiabilityScheduleOfRightOfUseAssetTables" xlink:type="simple" xlink:href="pbmlf-20260131.xsd#idr_Disclosure7OfficeLeaseRightOfUseOfficeLeaseLiabilityScheduleOfRightOfUseAssetTables"/>
	<link:definitionLink xlink:type="extended" xlink:role="http://www.pacificbooker.com/20260131/role/idr_Disclosure7OfficeLeaseRightOfUseOfficeLeaseLiabilityScheduleOfRightOfUseAssetTables"/>
	<link:roleRef roleURI="http://www.pacificbooker.com/20260131/role/idr_Disclosure7OfficeLeaseRightOfUseOfficeLeaseLiabilityScheduleOfMinimumLeasePaymentsInRespectOfLeaseLiabilityTables" xlink:type="simple" xlink:href="pbmlf-20260131.xsd#idr_Disclosure7OfficeLeaseRightOfUseOfficeLeaseLiabilityScheduleOfMinimumLeasePaymentsInRespectOfLeaseLiabilityTables"/>
	<link:definitionLink xlink:type="extended" xlink:role="http://www.pacificbooker.com/20260131/role/idr_Disclosure7OfficeLeaseRightOfUseOfficeLeaseLiabilityScheduleOfMinimumLeasePaymentsInRespectOfLeaseLiabilityTables"/>
	<link:roleRef roleURI="http://www.pacificbooker.com/20260131/role/idr_Disclosure7OfficeLeaseRightOfUseOfficeLeaseLiabilityScheduleOfNetChangeInTheLeaseLiabilityTables" xlink:type="simple" xlink:href="pbmlf-20260131.xsd#idr_Disclosure7OfficeLeaseRightOfUseOfficeLeaseLiabilityScheduleOfNetChangeInTheLeaseLiabilityTables"/>
	<link:definitionLink xlink:type="extended" xlink:role="http://www.pacificbooker.com/20260131/role/idr_Disclosure7OfficeLeaseRightOfUseOfficeLeaseLiabilityScheduleOfNetChangeInTheLeaseLiabilityTables"/>
	<link:roleRef roleURI="http://www.pacificbooker.com/20260131/role/idr_Disclosure8ShareCapitalOptionBasedPaymentsContributedSurplusScheduleOfStockOptionTransactionsTables" xlink:type="simple" xlink:href="pbmlf-20260131.xsd#idr_Disclosure8ShareCapitalOptionBasedPaymentsContributedSurplusScheduleOfStockOptionTransactionsTables"/>
	<link:definitionLink xlink:type="extended" xlink:role="http://www.pacificbooker.com/20260131/role/idr_Disclosure8ShareCapitalOptionBasedPaymentsContributedSurplusScheduleOfStockOptionTransactionsTables"/>
	<link:roleRef roleURI="http://www.pacificbooker.com/20260131/role/idr_Disclosure8ShareCapitalOptionBasedPaymentsContributedSurplusScheduleOfStockOptionsOutstandingTables" xlink:type="simple" xlink:href="pbmlf-20260131.xsd#idr_Disclosure8ShareCapitalOptionBasedPaymentsContributedSurplusScheduleOfStockOptionsOutstandingTables"/>
	<link:definitionLink xlink:type="extended" xlink:role="http://www.pacificbooker.com/20260131/role/idr_Disclosure8ShareCapitalOptionBasedPaymentsContributedSurplusScheduleOfStockOptionsOutstandingTables"/>
	<link:roleRef roleURI="http://www.pacificbooker.com/20260131/role/idr_Disclosure8ShareCapitalOptionBasedPaymentsContributedSurplusScheduleOfValuationOfStockOptionsGrantedTables" xlink:type="simple" xlink:href="pbmlf-20260131.xsd#idr_Disclosure8ShareCapitalOptionBasedPaymentsContributedSurplusScheduleOfValuationOfStockOptionsGrantedTables"/>
	<link:definitionLink xlink:type="extended" xlink:role="http://www.pacificbooker.com/20260131/role/idr_Disclosure8ShareCapitalOptionBasedPaymentsContributedSurplusScheduleOfValuationOfStockOptionsGrantedTables"/>
	<link:roleRef roleURI="http://www.pacificbooker.com/20260131/role/idr_Disclosure9LossPerShareEarningsPerShareTables" xlink:type="simple" xlink:href="pbmlf-20260131.xsd#idr_Disclosure9LossPerShareEarningsPerShareTables"/>
	<link:definitionLink xlink:type="extended" xlink:role="http://www.pacificbooker.com/20260131/role/idr_Disclosure9LossPerShareEarningsPerShareTables"/>
	<link:roleRef roleURI="http://www.pacificbooker.com/20260131/role/idr_Disclosure10TransactionsWithAndAmountsOwingToRelatedPartiesScheduleOfTransactionsWithRelatedPartiesTables" xlink:type="simple" xlink:href="pbmlf-20260131.xsd#idr_Disclosure10TransactionsWithAndAmountsOwingToRelatedPartiesScheduleOfTransactionsWithRelatedPartiesTables"/>
	<link:definitionLink xlink:type="extended" xlink:role="http://www.pacificbooker.com/20260131/role/idr_Disclosure10TransactionsWithAndAmountsOwingToRelatedPartiesScheduleOfTransactionsWithRelatedPartiesTables"/>
	<link:roleRef roleURI="http://www.pacificbooker.com/20260131/role/idr_Disclosure10TransactionsWithAndAmountsOwingToRelatedPartiesScheduleOfOptionBasedPaymentsAndCompensationTables" xlink:type="simple" xlink:href="pbmlf-20260131.xsd#idr_Disclosure10TransactionsWithAndAmountsOwingToRelatedPartiesScheduleOfOptionBasedPaymentsAndCompensationTables"/>
	<link:definitionLink xlink:type="extended" xlink:role="http://www.pacificbooker.com/20260131/role/idr_Disclosure10TransactionsWithAndAmountsOwingToRelatedPartiesScheduleOfOptionBasedPaymentsAndCompensationTables"/>
	<link:roleRef roleURI="http://www.pacificbooker.com/20260131/role/idr_Disclosure11SupplementalDisclosureWithRespectToCashFlowsScheduleOfCashFlowSupplementalDisclosuresTables" xlink:type="simple" xlink:href="pbmlf-20260131.xsd#idr_Disclosure11SupplementalDisclosureWithRespectToCashFlowsScheduleOfCashFlowSupplementalDisclosuresTables"/>
	<link:definitionLink xlink:type="extended" xlink:role="http://www.pacificbooker.com/20260131/role/idr_Disclosure11SupplementalDisclosureWithRespectToCashFlowsScheduleOfCashFlowSupplementalDisclosuresTables"/>
	<link:roleRef roleURI="http://www.pacificbooker.com/20260131/role/idr_Disclosure12IncomeTaxesScheduleOfIncomeTaxReconciliationTables" xlink:type="simple" xlink:href="pbmlf-20260131.xsd#idr_Disclosure12IncomeTaxesScheduleOfIncomeTaxReconciliationTables"/>
	<link:definitionLink xlink:type="extended" xlink:role="http://www.pacificbooker.com/20260131/role/idr_Disclosure12IncomeTaxesScheduleOfIncomeTaxReconciliationTables"/>
	<link:roleRef roleURI="http://www.pacificbooker.com/20260131/role/idr_Disclosure12IncomeTaxesScheduleOfUnrecognizedDeductibleTemporaryDifferencesTables" xlink:type="simple" xlink:href="pbmlf-20260131.xsd#idr_Disclosure12IncomeTaxesScheduleOfUnrecognizedDeductibleTemporaryDifferencesTables"/>
	<link:definitionLink xlink:type="extended" xlink:role="http://www.pacificbooker.com/20260131/role/idr_Disclosure12IncomeTaxesScheduleOfUnrecognizedDeductibleTemporaryDifferencesTables"/>
	<link:roleRef roleURI="http://www.pacificbooker.com/20260131/role/idr_Disclosure12IncomeTaxesScheduleOfExpirationOfNonCapitalLossCarryForwardsTables" xlink:type="simple" xlink:href="pbmlf-20260131.xsd#idr_Disclosure12IncomeTaxesScheduleOfExpirationOfNonCapitalLossCarryForwardsTables"/>
	<link:definitionLink xlink:type="extended" xlink:role="http://www.pacificbooker.com/20260131/role/idr_Disclosure12IncomeTaxesScheduleOfExpirationOfNonCapitalLossCarryForwardsTables"/>
	<link:roleRef roleURI="http://www.pacificbooker.com/20260131/role/idr_Disclosure1CorporateInformationDetails" xlink:type="simple" xlink:href="pbmlf-20260131.xsd#idr_Disclosure1CorporateInformationDetails"/>
	<link:definitionLink xlink:type="extended" xlink:role="http://www.pacificbooker.com/20260131/role/idr_Disclosure1CorporateInformationDetails"/>
	<link:roleRef roleURI="http://www.pacificbooker.com/20260131/role/idr_Disclosure2BasisOfPresentationBGoingConcernOfOperationsScheduleOfWorkingCapitalLossAndDeficitDetails" xlink:type="simple" xlink:href="pbmlf-20260131.xsd#idr_Disclosure2BasisOfPresentationBGoingConcernOfOperationsScheduleOfWorkingCapitalLossAndDeficitDetails"/>
	<link:definitionLink xlink:type="extended" xlink:role="http://www.pacificbooker.com/20260131/role/idr_Disclosure2BasisOfPresentationBGoingConcernOfOperationsScheduleOfWorkingCapitalLossAndDeficitDetails"/>
	<link:roleRef roleURI="http://www.pacificbooker.com/20260131/role/idr_Disclosure3SummaryOfMaterialAccountingPolicyInformationFEquipmentVehiclesAndFurnitureScheduleOfAnnualDepreciationOfEquipmentVehiclesAndFurnitureDetails" xlink:type="simple" xlink:href="pbmlf-20260131.xsd#idr_Disclosure3SummaryOfMaterialAccountingPolicyInformationFEquipmentVehiclesAndFurnitureScheduleOfAnnualDepreciationOfEquipmentVehiclesAndFurnitureDetails"/>
	<link:definitionLink xlink:type="extended" xlink:role="http://www.pacificbooker.com/20260131/role/idr_Disclosure3SummaryOfMaterialAccountingPolicyInformationFEquipmentVehiclesAndFurnitureScheduleOfAnnualDepreciationOfEquipmentVehiclesAndFurnitureDetails">
		<link:loc xlink:type='locator' xlink:href='https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_StatementTable' xlink:label='us-gaap_StatementTable'/>
		<link:loc xlink:type='locator' xlink:href='https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_ClassesOfPropertyPlantAndEquipmentAxis' xlink:label='ifrs-full_ClassesOfPropertyPlantAndEquipmentAxis'/>
		<link:definitionArc xlink:type='arc' xlink:arcrole='http://xbrl.org/int/dim/arcrole/hypercube-dimension' xlink:from='us-gaap_StatementTable' xlink:to='ifrs-full_ClassesOfPropertyPlantAndEquipmentAxis' use='optional' order='1.0' xbrldt:contextElement='segment'/>
		<link:loc xlink:type='locator' xlink:href='https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_ClassesOfPropertyPlantAndEquipmentDomain' xlink:label='ifrs-full_ClassesOfPropertyPlantAndEquipmentDomain'/>
		<link:definitionArc xlink:type='arc' xlink:arcrole='http://xbrl.org/int/dim/arcrole/dimension-domain' xlink:from='ifrs-full_ClassesOfPropertyPlantAndEquipmentAxis' xlink:to='ifrs-full_ClassesOfPropertyPlantAndEquipmentDomain' use='optional' order='1.0'/>
		<link:loc xlink:type='locator' xlink:href='https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_ClassesOfPropertyPlantAndEquipmentDomain' xlink:label='ifrs-full_ClassesOfPropertyPlantAndEquipmentDomain_1'/>
		<link:definitionArc xlink:type='arc' xlink:arcrole='http://xbrl.org/int/dim/arcrole/dimension-default' xlink:from='ifrs-full_ClassesOfPropertyPlantAndEquipmentAxis' xlink:to='ifrs-full_ClassesOfPropertyPlantAndEquipmentDomain_1' use='optional' order='1.0' xbrldt:contextElement='segment'/>
		<link:loc xlink:type='locator' xlink:href='https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_VehiclesMember' xlink:label='ifrs-full_VehiclesMember'/>
		<link:definitionArc xlink:type='arc' xlink:arcrole='http://xbrl.org/int/dim/arcrole/domain-member' xlink:from='ifrs-full_ClassesOfPropertyPlantAndEquipmentDomain' xlink:to='ifrs-full_VehiclesMember' use='optional' order='1.0'/>
		<link:loc xlink:type='locator' xlink:href='https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_ComputerEquipmentMember' xlink:label='ifrs-full_ComputerEquipmentMember'/>
		<link:definitionArc xlink:type='arc' xlink:arcrole='http://xbrl.org/int/dim/arcrole/domain-member' xlink:from='ifrs-full_ClassesOfPropertyPlantAndEquipmentDomain' xlink:to='ifrs-full_ComputerEquipmentMember' use='optional' order='2.0'/>
		<link:loc xlink:type='locator' xlink:href='https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_OfficeEquipmentMember' xlink:label='ifrs-full_OfficeEquipmentMember'/>
		<link:definitionArc xlink:type='arc' xlink:arcrole='http://xbrl.org/int/dim/arcrole/domain-member' xlink:from='ifrs-full_ClassesOfPropertyPlantAndEquipmentDomain' xlink:to='ifrs-full_OfficeEquipmentMember' use='optional' order='3.0'/>
		<link:loc xlink:type='locator' xlink:href='https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_StatementLineItems' xlink:label='us-gaap_StatementLineItems'/>
		<link:definitionArc xlink:type='arc' xlink:arcrole='http://xbrl.org/int/dim/arcrole/all' xlink:from='us-gaap_StatementLineItems' xlink:to='us-gaap_StatementTable' order='0.5' xbrldt:closed='true' xbrldt:contextElement='segment' use='optional'/>
		<link:loc xlink:type='locator' xlink:href='https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_DepreciationMethodPropertyPlantAndEquipment' xlink:label='ifrs-full_DepreciationMethodPropertyPlantAndEquipment'/>
		<link:definitionArc xlink:type='arc' xlink:arcrole='http://xbrl.org/int/dim/arcrole/domain-member' xlink:from='us-gaap_StatementLineItems' xlink:to='ifrs-full_DepreciationMethodPropertyPlantAndEquipment' use='optional' order='1.0'/>
	</link:definitionLink>
	<link:roleRef roleURI="http://www.pacificbooker.com/20260131/role/idr_Disclosure3SummaryOfMaterialAccountingPolicyInformationILossPerShareDetails" xlink:type="simple" xlink:href="pbmlf-20260131.xsd#idr_Disclosure3SummaryOfMaterialAccountingPolicyInformationILossPerShareDetails"/>
	<link:definitionLink xlink:type="extended" xlink:role="http://www.pacificbooker.com/20260131/role/idr_Disclosure3SummaryOfMaterialAccountingPolicyInformationILossPerShareDetails"/>
	<link:roleRef roleURI="http://www.pacificbooker.com/20260131/role/idr_Disclosure3SummaryOfMaterialAccountingPolicyInformationMRightOfUseAssetsAndLeaseLiabilitiesScheduleOfExpectedLifeAndResidualValuesForTheCompanySRightOfUseAssetDetails" xlink:type="simple" xlink:href="pbmlf-20260131.xsd#idr_Disclosure3SummaryOfMaterialAccountingPolicyInformationMRightOfUseAssetsAndLeaseLiabilitiesScheduleOfExpectedLifeAndResidualValuesForTheCompanySRightOfUseAssetDetails"/>
	<link:definitionLink xlink:type="extended" xlink:role="http://www.pacificbooker.com/20260131/role/idr_Disclosure3SummaryOfMaterialAccountingPolicyInformationMRightOfUseAssetsAndLeaseLiabilitiesScheduleOfExpectedLifeAndResidualValuesForTheCompanySRightOfUseAssetDetails"/>
	<link:roleRef roleURI="http://www.pacificbooker.com/20260131/role/idr_Disclosure5ExplorationAndEvaluationAssetsScheduleOfMorrisonClaimsAcquisitionCostDetails" xlink:type="simple" xlink:href="pbmlf-20260131.xsd#idr_Disclosure5ExplorationAndEvaluationAssetsScheduleOfMorrisonClaimsAcquisitionCostDetails"/>
	<link:definitionLink xlink:type="extended" xlink:role="http://www.pacificbooker.com/20260131/role/idr_Disclosure5ExplorationAndEvaluationAssetsScheduleOfMorrisonClaimsAcquisitionCostDetails"/>
	<link:roleRef roleURI="http://www.pacificbooker.com/20260131/role/idr_Disclosure5ExplorationAndEvaluationAssetsScheduleOfMorrisonClaimsDetails" xlink:type="simple" xlink:href="pbmlf-20260131.xsd#idr_Disclosure5ExplorationAndEvaluationAssetsScheduleOfMorrisonClaimsDetails"/>
	<link:definitionLink xlink:type="extended" xlink:role="http://www.pacificbooker.com/20260131/role/idr_Disclosure5ExplorationAndEvaluationAssetsScheduleOfMorrisonClaimsDetails">
		<link:loc xlink:type='locator' xlink:href='https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_StatementTable' xlink:label='us-gaap_StatementTable'/>
		<link:loc xlink:type='locator' xlink:href='https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_FairValueByAssetClassAxis' xlink:label='us-gaap_FairValueByAssetClassAxis'/>
		<link:definitionArc xlink:type='arc' xlink:arcrole='http://xbrl.org/int/dim/arcrole/hypercube-dimension' xlink:from='us-gaap_StatementTable' xlink:to='us-gaap_FairValueByAssetClassAxis' use='optional' order='1.0' xbrldt:contextElement='segment'/>
		<link:loc xlink:type='locator' xlink:href='https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_FairValueAssetsMeasuredOnRecurringBasisUnobservableInputReconciliationByAssetClassDomain' xlink:label='us-gaap_FairValueAssetsMeasuredOnRecurringBasisUnobservableInputReconciliationByAssetClassDomain'/>
		<link:definitionArc xlink:type='arc' xlink:arcrole='http://xbrl.org/int/dim/arcrole/dimension-domain' xlink:from='us-gaap_FairValueByAssetClassAxis' xlink:to='us-gaap_FairValueAssetsMeasuredOnRecurringBasisUnobservableInputReconciliationByAssetClassDomain' use='optional' order='1.0'/>
		<link:loc xlink:type='locator' xlink:href='https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_FairValueAssetsMeasuredOnRecurringBasisUnobservableInputReconciliationByAssetClassDomain' xlink:label='us-gaap_FairValueAssetsMeasuredOnRecurringBasisUnobservableInputReconciliationByAssetClassDomain_1'/>
		<link:definitionArc xlink:type='arc' xlink:arcrole='http://xbrl.org/int/dim/arcrole/dimension-default' xlink:from='us-gaap_FairValueByAssetClassAxis' xlink:to='us-gaap_FairValueAssetsMeasuredOnRecurringBasisUnobservableInputReconciliationByAssetClassDomain_1' use='optional' order='1.0' xbrldt:contextElement='segment'/>
		<link:loc xlink:type='locator' xlink:href='pbmlf-20260131.xsd#fil_MorrisonClaimsCanadaMember' xlink:label='fil_MorrisonClaimsCanadaMember'/>
		<link:definitionArc xlink:type='arc' xlink:arcrole='http://xbrl.org/int/dim/arcrole/domain-member' xlink:from='us-gaap_FairValueAssetsMeasuredOnRecurringBasisUnobservableInputReconciliationByAssetClassDomain' xlink:to='fil_MorrisonClaimsCanadaMember' use='optional' order='1.0'/>
		<link:loc xlink:type='locator' xlink:href='https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_StatementLineItems' xlink:label='us-gaap_StatementLineItems'/>
		<link:definitionArc xlink:type='arc' xlink:arcrole='http://xbrl.org/int/dim/arcrole/all' xlink:from='us-gaap_StatementLineItems' xlink:to='us-gaap_StatementTable' order='0.5' xbrldt:closed='true' xbrldt:contextElement='segment' use='optional'/>
		<link:loc xlink:type='locator' xlink:href='https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_TangibleExplorationAndEvaluationAssets' xlink:label='ifrs-full_TangibleExplorationAndEvaluationAssets'/>
		<link:definitionArc xlink:type='arc' xlink:arcrole='http://xbrl.org/int/dim/arcrole/domain-member' xlink:from='us-gaap_StatementLineItems' xlink:to='ifrs-full_TangibleExplorationAndEvaluationAssets' use='optional' order='1.0'/>
		<link:loc xlink:type='locator' xlink:href='pbmlf-20260131.xsd#fil_ExplorationAndEvaluationCostsAbstract' xlink:label='fil_ExplorationAndEvaluationCostsAbstract'/>
		<link:definitionArc xlink:type='arc' xlink:arcrole='http://xbrl.org/int/dim/arcrole/domain-member' xlink:from='us-gaap_StatementLineItems' xlink:to='fil_ExplorationAndEvaluationCostsAbstract' use='optional' order='2.0'/>
		<link:loc xlink:type='locator' xlink:href='pbmlf-20260131.xsd#fil_TotalExplorationAndEvaluationCosts' xlink:label='fil_TotalExplorationAndEvaluationCosts'/>
		<link:definitionArc xlink:type='arc' xlink:arcrole='http://xbrl.org/int/dim/arcrole/domain-member' xlink:from='fil_ExplorationAndEvaluationCostsAbstract' xlink:to='fil_TotalExplorationAndEvaluationCosts' use='optional' order='1.0'/>
		<link:loc xlink:type='locator' xlink:href='pbmlf-20260131.xsd#fil_ExplorationAdditionsAbstract' xlink:label='fil_ExplorationAdditionsAbstract'/>
		<link:definitionArc xlink:type='arc' xlink:arcrole='http://xbrl.org/int/dim/arcrole/domain-member' xlink:from='us-gaap_StatementLineItems' xlink:to='fil_ExplorationAdditionsAbstract' use='optional' order='3.0'/>
		<link:loc xlink:type='locator' xlink:href='pbmlf-20260131.xsd#fil_ExplorationAdditionsAssayAndAnalysis' xlink:label='fil_ExplorationAdditionsAssayAndAnalysis'/>
		<link:definitionArc xlink:type='arc' xlink:arcrole='http://xbrl.org/int/dim/arcrole/domain-member' xlink:from='fil_ExplorationAdditionsAbstract' xlink:to='fil_ExplorationAdditionsAssayAndAnalysis' use='optional' order='1.0'/>
		<link:loc xlink:type='locator' xlink:href='pbmlf-20260131.xsd#fil_ExplorationAdditionsSubContractsAndLabour' xlink:label='fil_ExplorationAdditionsSubContractsAndLabour'/>
		<link:definitionArc xlink:type='arc' xlink:arcrole='http://xbrl.org/int/dim/arcrole/domain-member' xlink:from='fil_ExplorationAdditionsAbstract' xlink:to='fil_ExplorationAdditionsSubContractsAndLabour' use='optional' order='2.0'/>
		<link:loc xlink:type='locator' xlink:href='pbmlf-20260131.xsd#fil_ExplorationAdditionsSuppliesAndGeneral' xlink:label='fil_ExplorationAdditionsSuppliesAndGeneral'/>
		<link:definitionArc xlink:type='arc' xlink:arcrole='http://xbrl.org/int/dim/arcrole/domain-member' xlink:from='fil_ExplorationAdditionsAbstract' xlink:to='fil_ExplorationAdditionsSuppliesAndGeneral' use='optional' order='3.0'/>
		<link:loc xlink:type='locator' xlink:href='pbmlf-20260131.xsd#fil_ExplorationAdditionsTravel' xlink:label='fil_ExplorationAdditionsTravel'/>
		<link:definitionArc xlink:type='arc' xlink:arcrole='http://xbrl.org/int/dim/arcrole/domain-member' xlink:from='fil_ExplorationAdditionsAbstract' xlink:to='fil_ExplorationAdditionsTravel' use='optional' order='4.0'/>
		<link:loc xlink:type='locator' xlink:href='pbmlf-20260131.xsd#fil_ExplorationAdditionsStakingAndRecording' xlink:label='fil_ExplorationAdditionsStakingAndRecording'/>
		<link:definitionArc xlink:type='arc' xlink:arcrole='http://xbrl.org/int/dim/arcrole/domain-member' xlink:from='fil_ExplorationAdditionsAbstract' xlink:to='fil_ExplorationAdditionsStakingAndRecording' use='optional' order='5.0'/>
		<link:loc xlink:type='locator' xlink:href='pbmlf-20260131.xsd#fil_EnvironmentalAdditionsAbstract' xlink:label='fil_EnvironmentalAdditionsAbstract'/>
		<link:definitionArc xlink:type='arc' xlink:arcrole='http://xbrl.org/int/dim/arcrole/domain-member' xlink:from='us-gaap_StatementLineItems' xlink:to='fil_EnvironmentalAdditionsAbstract' use='optional' order='4.0'/>
		<link:loc xlink:type='locator' xlink:href='pbmlf-20260131.xsd#fil_EnvironmentalAdditionsSubContractsAndLabour' xlink:label='fil_EnvironmentalAdditionsSubContractsAndLabour'/>
		<link:definitionArc xlink:type='arc' xlink:arcrole='http://xbrl.org/int/dim/arcrole/domain-member' xlink:from='fil_EnvironmentalAdditionsAbstract' xlink:to='fil_EnvironmentalAdditionsSubContractsAndLabour' use='optional' order='1.0'/>
		<link:loc xlink:type='locator' xlink:href='pbmlf-20260131.xsd#fil_EnvironmentalAdditionsSuppliesAndGeneral' xlink:label='fil_EnvironmentalAdditionsSuppliesAndGeneral'/>
		<link:definitionArc xlink:type='arc' xlink:arcrole='http://xbrl.org/int/dim/arcrole/domain-member' xlink:from='fil_EnvironmentalAdditionsAbstract' xlink:to='fil_EnvironmentalAdditionsSuppliesAndGeneral' use='optional' order='2.0'/>
		<link:loc xlink:type='locator' xlink:href='pbmlf-20260131.xsd#fil_EnvironmentalAdditionsTravel' xlink:label='fil_EnvironmentalAdditionsTravel'/>
		<link:definitionArc xlink:type='arc' xlink:arcrole='http://xbrl.org/int/dim/arcrole/domain-member' xlink:from='fil_EnvironmentalAdditionsAbstract' xlink:to='fil_EnvironmentalAdditionsTravel' use='optional' order='3.0'/>
	</link:definitionLink>
	<link:roleRef roleURI="http://www.pacificbooker.com/20260131/role/idr_Disclosure6EquipmentVehiclesAndFurnitureScheduleOfEquipmentVehiclesAndFurnitureDetails" xlink:type="simple" xlink:href="pbmlf-20260131.xsd#idr_Disclosure6EquipmentVehiclesAndFurnitureScheduleOfEquipmentVehiclesAndFurnitureDetails"/>
	<link:definitionLink xlink:type="extended" xlink:role="http://www.pacificbooker.com/20260131/role/idr_Disclosure6EquipmentVehiclesAndFurnitureScheduleOfEquipmentVehiclesAndFurnitureDetails">
		<link:loc xlink:type='locator' xlink:href='https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_StatementTable' xlink:label='us-gaap_StatementTable'/>
		<link:loc xlink:type='locator' xlink:href='https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_ClassesOfPropertyPlantAndEquipmentAxis' xlink:label='ifrs-full_ClassesOfPropertyPlantAndEquipmentAxis'/>
		<link:definitionArc xlink:type='arc' xlink:arcrole='http://xbrl.org/int/dim/arcrole/hypercube-dimension' xlink:from='us-gaap_StatementTable' xlink:to='ifrs-full_ClassesOfPropertyPlantAndEquipmentAxis' use='optional' order='1.0' xbrldt:contextElement='segment'/>
		<link:loc xlink:type='locator' xlink:href='https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_ClassesOfPropertyPlantAndEquipmentDomain' xlink:label='ifrs-full_ClassesOfPropertyPlantAndEquipmentDomain'/>
		<link:definitionArc xlink:type='arc' xlink:arcrole='http://xbrl.org/int/dim/arcrole/dimension-domain' xlink:from='ifrs-full_ClassesOfPropertyPlantAndEquipmentAxis' xlink:to='ifrs-full_ClassesOfPropertyPlantAndEquipmentDomain' use='optional' order='1.0'/>
		<link:loc xlink:type='locator' xlink:href='https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_ClassesOfPropertyPlantAndEquipmentDomain' xlink:label='ifrs-full_ClassesOfPropertyPlantAndEquipmentDomain_1'/>
		<link:definitionArc xlink:type='arc' xlink:arcrole='http://xbrl.org/int/dim/arcrole/dimension-default' xlink:from='ifrs-full_ClassesOfPropertyPlantAndEquipmentAxis' xlink:to='ifrs-full_ClassesOfPropertyPlantAndEquipmentDomain_1' use='optional' order='1.0' xbrldt:contextElement='segment'/>
		<link:loc xlink:type='locator' xlink:href='pbmlf-20260131.xsd#fil_AutomobilesValueAtCostMember' xlink:label='fil_AutomobilesValueAtCostMember'/>
		<link:definitionArc xlink:type='arc' xlink:arcrole='http://xbrl.org/int/dim/arcrole/domain-member' xlink:from='ifrs-full_ClassesOfPropertyPlantAndEquipmentDomain' xlink:to='fil_AutomobilesValueAtCostMember' use='optional' order='1.0'/>
		<link:loc xlink:type='locator' xlink:href='pbmlf-20260131.xsd#fil_AutomobilesAccumulatedDepreciationMember' xlink:label='fil_AutomobilesAccumulatedDepreciationMember'/>
		<link:definitionArc xlink:type='arc' xlink:arcrole='http://xbrl.org/int/dim/arcrole/domain-member' xlink:from='ifrs-full_ClassesOfPropertyPlantAndEquipmentDomain' xlink:to='fil_AutomobilesAccumulatedDepreciationMember' use='optional' order='2.0'/>
		<link:loc xlink:type='locator' xlink:href='pbmlf-20260131.xsd#fil_AutomobilesNetBookValueMember' xlink:label='fil_AutomobilesNetBookValueMember'/>
		<link:definitionArc xlink:type='arc' xlink:arcrole='http://xbrl.org/int/dim/arcrole/domain-member' xlink:from='ifrs-full_ClassesOfPropertyPlantAndEquipmentDomain' xlink:to='fil_AutomobilesNetBookValueMember' use='optional' order='3.0'/>
		<link:loc xlink:type='locator' xlink:href='pbmlf-20260131.xsd#fil_OfficeFurnitureAndEquipmentValueAtCostMember' xlink:label='fil_OfficeFurnitureAndEquipmentValueAtCostMember'/>
		<link:definitionArc xlink:type='arc' xlink:arcrole='http://xbrl.org/int/dim/arcrole/domain-member' xlink:from='ifrs-full_ClassesOfPropertyPlantAndEquipmentDomain' xlink:to='fil_OfficeFurnitureAndEquipmentValueAtCostMember' use='optional' order='4.0'/>
		<link:loc xlink:type='locator' xlink:href='pbmlf-20260131.xsd#fil_OfficeFurnitureAndEquipmentAccumulatedDepreciationMember' xlink:label='fil_OfficeFurnitureAndEquipmentAccumulatedDepreciationMember'/>
		<link:definitionArc xlink:type='arc' xlink:arcrole='http://xbrl.org/int/dim/arcrole/domain-member' xlink:from='ifrs-full_ClassesOfPropertyPlantAndEquipmentDomain' xlink:to='fil_OfficeFurnitureAndEquipmentAccumulatedDepreciationMember' use='optional' order='5.0'/>
		<link:loc xlink:type='locator' xlink:href='pbmlf-20260131.xsd#fil_OfficeFurnitureAndEquipmentNetBookValueMember' xlink:label='fil_OfficeFurnitureAndEquipmentNetBookValueMember'/>
		<link:definitionArc xlink:type='arc' xlink:arcrole='http://xbrl.org/int/dim/arcrole/domain-member' xlink:from='ifrs-full_ClassesOfPropertyPlantAndEquipmentDomain' xlink:to='fil_OfficeFurnitureAndEquipmentNetBookValueMember' use='optional' order='6.0'/>
		<link:loc xlink:type='locator' xlink:href='pbmlf-20260131.xsd#fil_ComputerEquipmentValueAtCostMember' xlink:label='fil_ComputerEquipmentValueAtCostMember'/>
		<link:definitionArc xlink:type='arc' xlink:arcrole='http://xbrl.org/int/dim/arcrole/domain-member' xlink:from='ifrs-full_ClassesOfPropertyPlantAndEquipmentDomain' xlink:to='fil_ComputerEquipmentValueAtCostMember' use='optional' order='7.0'/>
		<link:loc xlink:type='locator' xlink:href='pbmlf-20260131.xsd#fil_ComputerEquipmentAccumulatedDepreciationMember' xlink:label='fil_ComputerEquipmentAccumulatedDepreciationMember'/>
		<link:definitionArc xlink:type='arc' xlink:arcrole='http://xbrl.org/int/dim/arcrole/domain-member' xlink:from='ifrs-full_ClassesOfPropertyPlantAndEquipmentDomain' xlink:to='fil_ComputerEquipmentAccumulatedDepreciationMember' use='optional' order='8.0'/>
		<link:loc xlink:type='locator' xlink:href='pbmlf-20260131.xsd#fil_ComputerEquipmentNetBookValueMember' xlink:label='fil_ComputerEquipmentNetBookValueMember'/>
		<link:definitionArc xlink:type='arc' xlink:arcrole='http://xbrl.org/int/dim/arcrole/domain-member' xlink:from='ifrs-full_ClassesOfPropertyPlantAndEquipmentDomain' xlink:to='fil_ComputerEquipmentNetBookValueMember' use='optional' order='9.0'/>
		<link:loc xlink:type='locator' xlink:href='https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_StatementLineItems' xlink:label='us-gaap_StatementLineItems'/>
		<link:definitionArc xlink:type='arc' xlink:arcrole='http://xbrl.org/int/dim/arcrole/all' xlink:from='us-gaap_StatementLineItems' xlink:to='us-gaap_StatementTable' order='0.5' xbrldt:closed='true' xbrldt:contextElement='segment' use='optional'/>
		<link:loc xlink:type='locator' xlink:href='https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_PropertyPlantAndEquipment' xlink:label='ifrs-full_PropertyPlantAndEquipment'/>
		<link:definitionArc xlink:type='arc' xlink:arcrole='http://xbrl.org/int/dim/arcrole/domain-member' xlink:from='us-gaap_StatementLineItems' xlink:to='ifrs-full_PropertyPlantAndEquipment' use='optional' order='1.0'/>
		<link:loc xlink:type='locator' xlink:href='https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_AdditionsOtherThanThroughBusinessCombinationsPropertyPlantAndEquipment' xlink:label='ifrs-full_AdditionsOtherThanThroughBusinessCombinationsPropertyPlantAndEquipment'/>
		<link:definitionArc xlink:type='arc' xlink:arcrole='http://xbrl.org/int/dim/arcrole/domain-member' xlink:from='us-gaap_StatementLineItems' xlink:to='ifrs-full_AdditionsOtherThanThroughBusinessCombinationsPropertyPlantAndEquipment' use='optional' order='2.0'/>
		<link:loc xlink:type='locator' xlink:href='pbmlf-20260131.xsd#fil_DisposalsForPeriod' xlink:label='fil_DisposalsForPeriod'/>
		<link:definitionArc xlink:type='arc' xlink:arcrole='http://xbrl.org/int/dim/arcrole/domain-member' xlink:from='us-gaap_StatementLineItems' xlink:to='fil_DisposalsForPeriod' use='optional' order='3.0'/>
	</link:definitionLink>
	<link:roleRef roleURI="http://www.pacificbooker.com/20260131/role/idr_Disclosure7OfficeLeaseRightOfUseOfficeLeaseLiabilityDetails" xlink:type="simple" xlink:href="pbmlf-20260131.xsd#idr_Disclosure7OfficeLeaseRightOfUseOfficeLeaseLiabilityDetails"/>
	<link:definitionLink xlink:type="extended" xlink:role="http://www.pacificbooker.com/20260131/role/idr_Disclosure7OfficeLeaseRightOfUseOfficeLeaseLiabilityDetails"/>
	<link:roleRef roleURI="http://www.pacificbooker.com/20260131/role/idr_Disclosure7OfficeLeaseRightOfUseOfficeLeaseLiabilityScheduleOfRightOfUseAssetDetails" xlink:type="simple" xlink:href="pbmlf-20260131.xsd#idr_Disclosure7OfficeLeaseRightOfUseOfficeLeaseLiabilityScheduleOfRightOfUseAssetDetails"/>
	<link:definitionLink xlink:type="extended" xlink:role="http://www.pacificbooker.com/20260131/role/idr_Disclosure7OfficeLeaseRightOfUseOfficeLeaseLiabilityScheduleOfRightOfUseAssetDetails"/>
	<link:roleRef roleURI="http://www.pacificbooker.com/20260131/role/idr_Disclosure7OfficeLeaseRightOfUseOfficeLeaseLiabilityScheduleOfMinimumLeasePaymentsInRespectOfLeaseLiabilityDetails" xlink:type="simple" xlink:href="pbmlf-20260131.xsd#idr_Disclosure7OfficeLeaseRightOfUseOfficeLeaseLiabilityScheduleOfMinimumLeasePaymentsInRespectOfLeaseLiabilityDetails"/>
	<link:definitionLink xlink:type="extended" xlink:role="http://www.pacificbooker.com/20260131/role/idr_Disclosure7OfficeLeaseRightOfUseOfficeLeaseLiabilityScheduleOfMinimumLeasePaymentsInRespectOfLeaseLiabilityDetails">
		<link:loc xlink:type='locator' xlink:href='https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_StatementTable' xlink:label='us-gaap_StatementTable'/>
		<link:loc xlink:type='locator' xlink:href='https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_MaturityAxis' xlink:label='ifrs-full_MaturityAxis'/>
		<link:definitionArc xlink:type='arc' xlink:arcrole='http://xbrl.org/int/dim/arcrole/hypercube-dimension' xlink:from='us-gaap_StatementTable' xlink:to='ifrs-full_MaturityAxis' use='optional' order='1.0' xbrldt:contextElement='segment'/>
		<link:loc xlink:type='locator' xlink:href='https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_MaturityDomain' xlink:label='ifrs-full_MaturityDomain'/>
		<link:definitionArc xlink:type='arc' xlink:arcrole='http://xbrl.org/int/dim/arcrole/dimension-domain' xlink:from='ifrs-full_MaturityAxis' xlink:to='ifrs-full_MaturityDomain' use='optional' order='1.0'/>
		<link:loc xlink:type='locator' xlink:href='https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_MaturityDomain' xlink:label='ifrs-full_MaturityDomain_1'/>
		<link:definitionArc xlink:type='arc' xlink:arcrole='http://xbrl.org/int/dim/arcrole/dimension-default' xlink:from='ifrs-full_MaturityAxis' xlink:to='ifrs-full_MaturityDomain_1' use='optional' order='1.0' xbrldt:contextElement='segment'/>
		<link:loc xlink:type='locator' xlink:href='https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_NotLaterThanOneYearMember' xlink:label='ifrs-full_NotLaterThanOneYearMember'/>
		<link:definitionArc xlink:type='arc' xlink:arcrole='http://xbrl.org/int/dim/arcrole/domain-member' xlink:from='ifrs-full_MaturityDomain' xlink:to='ifrs-full_NotLaterThanOneYearMember' use='optional' order='1.0'/>
		<link:loc xlink:type='locator' xlink:href='https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_LaterThanOneYearAndNotLaterThanTwoYearsMember' xlink:label='ifrs-full_LaterThanOneYearAndNotLaterThanTwoYearsMember'/>
		<link:definitionArc xlink:type='arc' xlink:arcrole='http://xbrl.org/int/dim/arcrole/domain-member' xlink:from='ifrs-full_MaturityDomain' xlink:to='ifrs-full_LaterThanOneYearAndNotLaterThanTwoYearsMember' use='optional' order='2.0'/>
		<link:loc xlink:type='locator' xlink:href='https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_StatementLineItems' xlink:label='us-gaap_StatementLineItems'/>
		<link:definitionArc xlink:type='arc' xlink:arcrole='http://xbrl.org/int/dim/arcrole/all' xlink:from='us-gaap_StatementLineItems' xlink:to='us-gaap_StatementTable' order='0.5' xbrldt:closed='true' xbrldt:contextElement='segment' use='optional'/>
		<link:loc xlink:type='locator' xlink:href='https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_UndiscountedFinanceLeasePaymentsToBeReceived' xlink:label='ifrs-full_UndiscountedFinanceLeasePaymentsToBeReceived'/>
		<link:definitionArc xlink:type='arc' xlink:arcrole='http://xbrl.org/int/dim/arcrole/domain-member' xlink:from='us-gaap_StatementLineItems' xlink:to='ifrs-full_UndiscountedFinanceLeasePaymentsToBeReceived' use='optional' order='1.0'/>
		<link:loc xlink:type='locator' xlink:href='pbmlf-20260131.xsd#fil_EffectsOfDiscounting' xlink:label='fil_EffectsOfDiscounting'/>
		<link:definitionArc xlink:type='arc' xlink:arcrole='http://xbrl.org/int/dim/arcrole/domain-member' xlink:from='us-gaap_StatementLineItems' xlink:to='fil_EffectsOfDiscounting' use='optional' order='2.0'/>
		<link:loc xlink:type='locator' xlink:href='https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_LeaseLiabilities' xlink:label='ifrs-full_LeaseLiabilities'/>
		<link:definitionArc xlink:type='arc' xlink:arcrole='http://xbrl.org/int/dim/arcrole/domain-member' xlink:from='us-gaap_StatementLineItems' xlink:to='ifrs-full_LeaseLiabilities' use='optional' order='3.0'/>
		<link:loc xlink:type='locator' xlink:href='https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_CurrentLeaseLiabilities' xlink:label='ifrs-full_CurrentLeaseLiabilities'/>
		<link:definitionArc xlink:type='arc' xlink:arcrole='http://xbrl.org/int/dim/arcrole/domain-member' xlink:from='us-gaap_StatementLineItems' xlink:to='ifrs-full_CurrentLeaseLiabilities' use='optional' order='4.0'/>
		<link:loc xlink:type='locator' xlink:href='https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_NoncurrentLeaseLiabilities' xlink:label='ifrs-full_NoncurrentLeaseLiabilities'/>
		<link:definitionArc xlink:type='arc' xlink:arcrole='http://xbrl.org/int/dim/arcrole/domain-member' xlink:from='us-gaap_StatementLineItems' xlink:to='ifrs-full_NoncurrentLeaseLiabilities' use='optional' order='5.0'/>
	</link:definitionLink>
	<link:roleRef roleURI="http://www.pacificbooker.com/20260131/role/idr_Disclosure7OfficeLeaseRightOfUseOfficeLeaseLiabilityScheduleOfNetChangeInTheLeaseLiabilityDetails" xlink:type="simple" xlink:href="pbmlf-20260131.xsd#idr_Disclosure7OfficeLeaseRightOfUseOfficeLeaseLiabilityScheduleOfNetChangeInTheLeaseLiabilityDetails"/>
	<link:definitionLink xlink:type="extended" xlink:role="http://www.pacificbooker.com/20260131/role/idr_Disclosure7OfficeLeaseRightOfUseOfficeLeaseLiabilityScheduleOfNetChangeInTheLeaseLiabilityDetails"/>
	<link:roleRef roleURI="http://www.pacificbooker.com/20260131/role/idr_Disclosure8ShareCapitalOptionBasedPaymentsContributedSurplusDetails" xlink:type="simple" xlink:href="pbmlf-20260131.xsd#idr_Disclosure8ShareCapitalOptionBasedPaymentsContributedSurplusDetails"/>
	<link:definitionLink xlink:type="extended" xlink:role="http://www.pacificbooker.com/20260131/role/idr_Disclosure8ShareCapitalOptionBasedPaymentsContributedSurplusDetails"/>
	<link:roleRef roleURI="http://www.pacificbooker.com/20260131/role/idr_Disclosure8ShareCapitalOptionBasedPaymentsContributedSurplusScheduleOfStockOptionTransactionsDetails" xlink:type="simple" xlink:href="pbmlf-20260131.xsd#idr_Disclosure8ShareCapitalOptionBasedPaymentsContributedSurplusScheduleOfStockOptionTransactionsDetails"/>
	<link:definitionLink xlink:type="extended" xlink:role="http://www.pacificbooker.com/20260131/role/idr_Disclosure8ShareCapitalOptionBasedPaymentsContributedSurplusScheduleOfStockOptionTransactionsDetails">
		<link:loc xlink:type='locator' xlink:href='https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_StatementTable' xlink:label='us-gaap_StatementTable'/>
		<link:loc xlink:type='locator' xlink:href='https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_ClassesOfFinancialInstrumentsAxis' xlink:label='ifrs-full_ClassesOfFinancialInstrumentsAxis'/>
		<link:definitionArc xlink:type='arc' xlink:arcrole='http://xbrl.org/int/dim/arcrole/hypercube-dimension' xlink:from='us-gaap_StatementTable' xlink:to='ifrs-full_ClassesOfFinancialInstrumentsAxis' use='optional' order='1.0' xbrldt:contextElement='segment'/>
		<link:loc xlink:type='locator' xlink:href='https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_ClassesOfFinancialInstrumentsDomain' xlink:label='ifrs-full_ClassesOfFinancialInstrumentsDomain'/>
		<link:definitionArc xlink:type='arc' xlink:arcrole='http://xbrl.org/int/dim/arcrole/dimension-domain' xlink:from='ifrs-full_ClassesOfFinancialInstrumentsAxis' xlink:to='ifrs-full_ClassesOfFinancialInstrumentsDomain' use='optional' order='1.0'/>
		<link:loc xlink:type='locator' xlink:href='https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_ClassesOfFinancialInstrumentsDomain' xlink:label='ifrs-full_ClassesOfFinancialInstrumentsDomain_1'/>
		<link:definitionArc xlink:type='arc' xlink:arcrole='http://xbrl.org/int/dim/arcrole/dimension-default' xlink:from='ifrs-full_ClassesOfFinancialInstrumentsAxis' xlink:to='ifrs-full_ClassesOfFinancialInstrumentsDomain_1' use='optional' order='1.0' xbrldt:contextElement='segment'/>
		<link:loc xlink:type='locator' xlink:href='pbmlf-20260131.xsd#fil_StockOptionsMember' xlink:label='fil_StockOptionsMember'/>
		<link:definitionArc xlink:type='arc' xlink:arcrole='http://xbrl.org/int/dim/arcrole/domain-member' xlink:from='ifrs-full_ClassesOfFinancialInstrumentsDomain' xlink:to='fil_StockOptionsMember' use='optional' order='1.0'/>
		<link:loc xlink:type='locator' xlink:href='https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_StatementLineItems' xlink:label='us-gaap_StatementLineItems'/>
		<link:definitionArc xlink:type='arc' xlink:arcrole='http://xbrl.org/int/dim/arcrole/all' xlink:from='us-gaap_StatementLineItems' xlink:to='us-gaap_StatementTable' order='0.5' xbrldt:closed='true' xbrldt:contextElement='segment' use='optional'/>
		<link:loc xlink:type='locator' xlink:href='https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber' xlink:label='us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber'/>
		<link:definitionArc xlink:type='arc' xlink:arcrole='http://xbrl.org/int/dim/arcrole/domain-member' xlink:from='us-gaap_StatementLineItems' xlink:to='us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber' use='optional' order='1.0'/>
		<link:loc xlink:type='locator' xlink:href='https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice' xlink:label='us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice'/>
		<link:definitionArc xlink:type='arc' xlink:arcrole='http://xbrl.org/int/dim/arcrole/domain-member' xlink:from='us-gaap_StatementLineItems' xlink:to='us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice' use='optional' order='2.0'/>
		<link:loc xlink:type='locator' xlink:href='https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross' xlink:label='us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross'/>
		<link:definitionArc xlink:type='arc' xlink:arcrole='http://xbrl.org/int/dim/arcrole/domain-member' xlink:from='us-gaap_StatementLineItems' xlink:to='us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross' use='optional' order='3.0'/>
		<link:loc xlink:type='locator' xlink:href='https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageExercisePrice' xlink:label='us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageExercisePrice'/>
		<link:definitionArc xlink:type='arc' xlink:arcrole='http://xbrl.org/int/dim/arcrole/domain-member' xlink:from='us-gaap_StatementLineItems' xlink:to='us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageExercisePrice' use='optional' order='4.0'/>
		<link:loc xlink:type='locator' xlink:href='https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExpirationsInPeriod' xlink:label='us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExpirationsInPeriod'/>
		<link:definitionArc xlink:type='arc' xlink:arcrole='http://xbrl.org/int/dim/arcrole/domain-member' xlink:from='us-gaap_StatementLineItems' xlink:to='us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExpirationsInPeriod' use='optional' order='5.0'/>
		<link:loc xlink:type='locator' xlink:href='https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExpirationsInPeriodWeightedAverageExercisePrice' xlink:label='us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExpirationsInPeriodWeightedAverageExercisePrice'/>
		<link:definitionArc xlink:type='arc' xlink:arcrole='http://xbrl.org/int/dim/arcrole/domain-member' xlink:from='us-gaap_StatementLineItems' xlink:to='us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExpirationsInPeriodWeightedAverageExercisePrice' use='optional' order='6.0'/>
		<link:loc xlink:type='locator' xlink:href='https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableNumber' xlink:label='us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableNumber'/>
		<link:definitionArc xlink:type='arc' xlink:arcrole='http://xbrl.org/int/dim/arcrole/domain-member' xlink:from='us-gaap_StatementLineItems' xlink:to='us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableNumber' use='optional' order='7.0'/>
		<link:loc xlink:type='locator' xlink:href='https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableWeightedAverageExercisePrice' xlink:label='us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableWeightedAverageExercisePrice'/>
		<link:definitionArc xlink:type='arc' xlink:arcrole='http://xbrl.org/int/dim/arcrole/domain-member' xlink:from='us-gaap_StatementLineItems' xlink:to='us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableWeightedAverageExercisePrice' use='optional' order='8.0'/>
		<link:loc xlink:type='locator' xlink:href='https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsOutstandingWeightedAverageRemainingContractualTerm2' xlink:label='us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsOutstandingWeightedAverageRemainingContractualTerm2'/>
		<link:definitionArc xlink:type='arc' xlink:arcrole='http://xbrl.org/int/dim/arcrole/domain-member' xlink:from='us-gaap_StatementLineItems' xlink:to='us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsOutstandingWeightedAverageRemainingContractualTerm2' use='optional' order='9.0'/>
		<link:loc xlink:type='locator' xlink:href='https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageGrantDateFairValue' xlink:label='us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageGrantDateFairValue'/>
		<link:definitionArc xlink:type='arc' xlink:arcrole='http://xbrl.org/int/dim/arcrole/domain-member' xlink:from='us-gaap_StatementLineItems' xlink:to='us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageGrantDateFairValue' use='optional' order='10.0'/>
	</link:definitionLink>
	<link:roleRef roleURI="http://www.pacificbooker.com/20260131/role/idr_Disclosure8ShareCapitalOptionBasedPaymentsContributedSurplusScheduleOfStockOptionsOutstandingDetails" xlink:type="simple" xlink:href="pbmlf-20260131.xsd#idr_Disclosure8ShareCapitalOptionBasedPaymentsContributedSurplusScheduleOfStockOptionsOutstandingDetails"/>
	<link:definitionLink xlink:type="extended" xlink:role="http://www.pacificbooker.com/20260131/role/idr_Disclosure8ShareCapitalOptionBasedPaymentsContributedSurplusScheduleOfStockOptionsOutstandingDetails">
		<link:loc xlink:type='locator' xlink:href='https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_StatementTable' xlink:label='us-gaap_StatementTable'/>
		<link:loc xlink:type='locator' xlink:href='https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_ClassesOfFinancialInstrumentsAxis' xlink:label='ifrs-full_ClassesOfFinancialInstrumentsAxis'/>
		<link:definitionArc xlink:type='arc' xlink:arcrole='http://xbrl.org/int/dim/arcrole/hypercube-dimension' xlink:from='us-gaap_StatementTable' xlink:to='ifrs-full_ClassesOfFinancialInstrumentsAxis' use='optional' order='1.0' xbrldt:contextElement='segment'/>
		<link:loc xlink:type='locator' xlink:href='https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_ClassesOfFinancialInstrumentsDomain' xlink:label='ifrs-full_ClassesOfFinancialInstrumentsDomain'/>
		<link:definitionArc xlink:type='arc' xlink:arcrole='http://xbrl.org/int/dim/arcrole/dimension-domain' xlink:from='ifrs-full_ClassesOfFinancialInstrumentsAxis' xlink:to='ifrs-full_ClassesOfFinancialInstrumentsDomain' use='optional' order='1.0'/>
		<link:loc xlink:type='locator' xlink:href='https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_ClassesOfFinancialInstrumentsDomain' xlink:label='ifrs-full_ClassesOfFinancialInstrumentsDomain_1'/>
		<link:definitionArc xlink:type='arc' xlink:arcrole='http://xbrl.org/int/dim/arcrole/dimension-default' xlink:from='ifrs-full_ClassesOfFinancialInstrumentsAxis' xlink:to='ifrs-full_ClassesOfFinancialInstrumentsDomain_1' use='optional' order='1.0' xbrldt:contextElement='segment'/>
		<link:loc xlink:type='locator' xlink:href='pbmlf-20260131.xsd#fil_StockOptionOutstanding1Member' xlink:label='fil_StockOptionOutstanding1Member'/>
		<link:definitionArc xlink:type='arc' xlink:arcrole='http://xbrl.org/int/dim/arcrole/domain-member' xlink:from='ifrs-full_ClassesOfFinancialInstrumentsDomain' xlink:to='fil_StockOptionOutstanding1Member' use='optional' order='1.0'/>
		<link:loc xlink:type='locator' xlink:href='pbmlf-20260131.xsd#fil_StockOptionOutstanding2Member' xlink:label='fil_StockOptionOutstanding2Member'/>
		<link:definitionArc xlink:type='arc' xlink:arcrole='http://xbrl.org/int/dim/arcrole/domain-member' xlink:from='ifrs-full_ClassesOfFinancialInstrumentsDomain' xlink:to='fil_StockOptionOutstanding2Member' use='optional' order='2.0'/>
		<link:loc xlink:type='locator' xlink:href='pbmlf-20260131.xsd#fil_StockOptionOutstanding3Member' xlink:label='fil_StockOptionOutstanding3Member'/>
		<link:definitionArc xlink:type='arc' xlink:arcrole='http://xbrl.org/int/dim/arcrole/domain-member' xlink:from='ifrs-full_ClassesOfFinancialInstrumentsDomain' xlink:to='fil_StockOptionOutstanding3Member' use='optional' order='3.0'/>
		<link:loc xlink:type='locator' xlink:href='pbmlf-20260131.xsd#fil_StockOptionOutstanding4Member' xlink:label='fil_StockOptionOutstanding4Member'/>
		<link:definitionArc xlink:type='arc' xlink:arcrole='http://xbrl.org/int/dim/arcrole/domain-member' xlink:from='ifrs-full_ClassesOfFinancialInstrumentsDomain' xlink:to='fil_StockOptionOutstanding4Member' use='optional' order='4.0'/>
		<link:loc xlink:type='locator' xlink:href='pbmlf-20260131.xsd#fil_StockOptionOutstanding5Member' xlink:label='fil_StockOptionOutstanding5Member'/>
		<link:definitionArc xlink:type='arc' xlink:arcrole='http://xbrl.org/int/dim/arcrole/domain-member' xlink:from='ifrs-full_ClassesOfFinancialInstrumentsDomain' xlink:to='fil_StockOptionOutstanding5Member' use='optional' order='5.0'/>
		<link:loc xlink:type='locator' xlink:href='pbmlf-20260131.xsd#fil_StockOptionOutstanding6Member' xlink:label='fil_StockOptionOutstanding6Member'/>
		<link:definitionArc xlink:type='arc' xlink:arcrole='http://xbrl.org/int/dim/arcrole/domain-member' xlink:from='ifrs-full_ClassesOfFinancialInstrumentsDomain' xlink:to='fil_StockOptionOutstanding6Member' use='optional' order='6.0'/>
		<link:loc xlink:type='locator' xlink:href='pbmlf-20260131.xsd#fil_StockOptionOutstanding7Member' xlink:label='fil_StockOptionOutstanding7Member'/>
		<link:definitionArc xlink:type='arc' xlink:arcrole='http://xbrl.org/int/dim/arcrole/domain-member' xlink:from='ifrs-full_ClassesOfFinancialInstrumentsDomain' xlink:to='fil_StockOptionOutstanding7Member' use='optional' order='7.0'/>
		<link:loc xlink:type='locator' xlink:href='https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_StatementLineItems' xlink:label='us-gaap_StatementLineItems'/>
		<link:definitionArc xlink:type='arc' xlink:arcrole='http://xbrl.org/int/dim/arcrole/all' xlink:from='us-gaap_StatementLineItems' xlink:to='us-gaap_StatementTable' order='0.5' xbrldt:closed='true' xbrldt:contextElement='segment' use='optional'/>
		<link:loc xlink:type='locator' xlink:href='pbmlf-20260131.xsd#fil_NumberOfOptionsOutstanding' xlink:label='fil_NumberOfOptionsOutstanding'/>
		<link:definitionArc xlink:type='arc' xlink:arcrole='http://xbrl.org/int/dim/arcrole/domain-member' xlink:from='us-gaap_StatementLineItems' xlink:to='fil_NumberOfOptionsOutstanding' use='optional' order='1.0'/>
		<link:loc xlink:type='locator' xlink:href='pbmlf-20260131.xsd#fil_NumberCurrentlyExercisable' xlink:label='fil_NumberCurrentlyExercisable'/>
		<link:definitionArc xlink:type='arc' xlink:arcrole='http://xbrl.org/int/dim/arcrole/domain-member' xlink:from='us-gaap_StatementLineItems' xlink:to='fil_NumberCurrentlyExercisable' use='optional' order='2.0'/>
		<link:loc xlink:type='locator' xlink:href='pbmlf-20260131.xsd#fil_ExercisePrice' xlink:label='fil_ExercisePrice'/>
		<link:definitionArc xlink:type='arc' xlink:arcrole='http://xbrl.org/int/dim/arcrole/domain-member' xlink:from='us-gaap_StatementLineItems' xlink:to='fil_ExercisePrice' use='optional' order='3.0'/>
		<link:loc xlink:type='locator' xlink:href='pbmlf-20260131.xsd#fil_ExpiryDate' xlink:label='fil_ExpiryDate'/>
		<link:definitionArc xlink:type='arc' xlink:arcrole='http://xbrl.org/int/dim/arcrole/domain-member' xlink:from='us-gaap_StatementLineItems' xlink:to='fil_ExpiryDate' use='optional' order='4.0'/>
	</link:definitionLink>
	<link:roleRef roleURI="http://www.pacificbooker.com/20260131/role/idr_Disclosure8ShareCapitalOptionBasedPaymentsContributedSurplusScheduleOfValuationOfStockOptionsGrantedDetails" xlink:type="simple" xlink:href="pbmlf-20260131.xsd#idr_Disclosure8ShareCapitalOptionBasedPaymentsContributedSurplusScheduleOfValuationOfStockOptionsGrantedDetails"/>
	<link:definitionLink xlink:type="extended" xlink:role="http://www.pacificbooker.com/20260131/role/idr_Disclosure8ShareCapitalOptionBasedPaymentsContributedSurplusScheduleOfValuationOfStockOptionsGrantedDetails"/>
	<link:roleRef roleURI="http://www.pacificbooker.com/20260131/role/idr_Disclosure9LossPerShareEarningsPerShareDetails" xlink:type="simple" xlink:href="pbmlf-20260131.xsd#idr_Disclosure9LossPerShareEarningsPerShareDetails"/>
	<link:definitionLink xlink:type="extended" xlink:role="http://www.pacificbooker.com/20260131/role/idr_Disclosure9LossPerShareEarningsPerShareDetails"/>
	<link:roleRef roleURI="http://www.pacificbooker.com/20260131/role/idr_Disclosure10TransactionsWithAndAmountsOwingToRelatedPartiesScheduleOfTransactionsWithRelatedPartiesDetails" xlink:type="simple" xlink:href="pbmlf-20260131.xsd#idr_Disclosure10TransactionsWithAndAmountsOwingToRelatedPartiesScheduleOfTransactionsWithRelatedPartiesDetails"/>
	<link:definitionLink xlink:type="extended" xlink:role="http://www.pacificbooker.com/20260131/role/idr_Disclosure10TransactionsWithAndAmountsOwingToRelatedPartiesScheduleOfTransactionsWithRelatedPartiesDetails">
		<link:loc xlink:type='locator' xlink:href='https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_StatementTable' xlink:label='us-gaap_StatementTable'/>
		<link:loc xlink:type='locator' xlink:href='https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_CategoriesOfRelatedPartiesAxis' xlink:label='ifrs-full_CategoriesOfRelatedPartiesAxis'/>
		<link:definitionArc xlink:type='arc' xlink:arcrole='http://xbrl.org/int/dim/arcrole/hypercube-dimension' xlink:from='us-gaap_StatementTable' xlink:to='ifrs-full_CategoriesOfRelatedPartiesAxis' use='optional' order='1.0' xbrldt:contextElement='segment'/>
		<link:loc xlink:type='locator' xlink:href='pbmlf-20260131.xsd#fil_EntitysTotalForRelatedPartiesMember' xlink:label='fil_EntitysTotalForRelatedPartiesMember'/>
		<link:definitionArc xlink:type='arc' xlink:arcrole='http://xbrl.org/int/dim/arcrole/dimension-domain' xlink:from='ifrs-full_CategoriesOfRelatedPartiesAxis' xlink:to='fil_EntitysTotalForRelatedPartiesMember' use='optional' order='1.0'/>
		<link:loc xlink:type='locator' xlink:href='pbmlf-20260131.xsd#fil_EntitysTotalForRelatedPartiesMember' xlink:label='fil_EntitysTotalForRelatedPartiesMember_1'/>
		<link:definitionArc xlink:type='arc' xlink:arcrole='http://xbrl.org/int/dim/arcrole/dimension-default' xlink:from='ifrs-full_CategoriesOfRelatedPartiesAxis' xlink:to='fil_EntitysTotalForRelatedPartiesMember_1' use='optional' order='1.0' xbrldt:contextElement='segment'/>
		<link:loc xlink:type='locator' xlink:href='pbmlf-20260131.xsd#fil_DirectorForInvestorRelationsMember' xlink:label='fil_DirectorForInvestorRelationsMember'/>
		<link:definitionArc xlink:type='arc' xlink:arcrole='http://xbrl.org/int/dim/arcrole/domain-member' xlink:from='fil_EntitysTotalForRelatedPartiesMember' xlink:to='fil_DirectorForInvestorRelationsMember' use='optional' order='1.0'/>
		<link:loc xlink:type='locator' xlink:href='pbmlf-20260131.xsd#fil_ConsultingAMember' xlink:label='fil_ConsultingAMember'/>
		<link:definitionArc xlink:type='arc' xlink:arcrole='http://xbrl.org/int/dim/arcrole/domain-member' xlink:from='fil_EntitysTotalForRelatedPartiesMember' xlink:to='fil_ConsultingAMember' use='optional' order='2.0'/>
		<link:loc xlink:type='locator' xlink:href='pbmlf-20260131.xsd#fil_ToAnOfficerOfTheCompanyBMember' xlink:label='fil_ToAnOfficerOfTheCompanyBMember'/>
		<link:definitionArc xlink:type='arc' xlink:arcrole='http://xbrl.org/int/dim/arcrole/domain-member' xlink:from='fil_EntitysTotalForRelatedPartiesMember' xlink:to='fil_ToAnOfficerOfTheCompanyBMember' use='optional' order='3.0'/>
		<link:loc xlink:type='locator' xlink:href='https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_StatementLineItems' xlink:label='us-gaap_StatementLineItems'/>
		<link:definitionArc xlink:type='arc' xlink:arcrole='http://xbrl.org/int/dim/arcrole/all' xlink:from='us-gaap_StatementLineItems' xlink:to='us-gaap_StatementTable' order='0.5' xbrldt:closed='true' xbrldt:contextElement='segment' use='optional'/>
		<link:loc xlink:type='locator' xlink:href='pbmlf-20260131.xsd#fil_AmountsPaidOrPayable' xlink:label='fil_AmountsPaidOrPayable'/>
		<link:definitionArc xlink:type='arc' xlink:arcrole='http://xbrl.org/int/dim/arcrole/domain-member' xlink:from='us-gaap_StatementLineItems' xlink:to='fil_AmountsPaidOrPayable' use='optional' order='1.0'/>
		<link:loc xlink:type='locator' xlink:href='pbmlf-20260131.xsd#fil_OptionBasedPayment' xlink:label='fil_OptionBasedPayment'/>
		<link:definitionArc xlink:type='arc' xlink:arcrole='http://xbrl.org/int/dim/arcrole/domain-member' xlink:from='us-gaap_StatementLineItems' xlink:to='fil_OptionBasedPayment' use='optional' order='2.0'/>
		<link:loc xlink:type='locator' xlink:href='pbmlf-20260131.xsd#fil_OwedAtYearEnd' xlink:label='fil_OwedAtYearEnd'/>
		<link:definitionArc xlink:type='arc' xlink:arcrole='http://xbrl.org/int/dim/arcrole/domain-member' xlink:from='us-gaap_StatementLineItems' xlink:to='fil_OwedAtYearEnd' use='optional' order='3.0'/>
	</link:definitionLink>
	<link:roleRef roleURI="http://www.pacificbooker.com/20260131/role/idr_Disclosure10TransactionsWithAndAmountsOwingToRelatedPartiesScheduleOfOptionBasedPaymentsAndCompensationDetails" xlink:type="simple" xlink:href="pbmlf-20260131.xsd#idr_Disclosure10TransactionsWithAndAmountsOwingToRelatedPartiesScheduleOfOptionBasedPaymentsAndCompensationDetails"/>
	<link:definitionLink xlink:type="extended" xlink:role="http://www.pacificbooker.com/20260131/role/idr_Disclosure10TransactionsWithAndAmountsOwingToRelatedPartiesScheduleOfOptionBasedPaymentsAndCompensationDetails"/>
	<link:roleRef roleURI="http://www.pacificbooker.com/20260131/role/idr_Disclosure11SupplementalDisclosureWithRespectToCashFlowsScheduleOfCashFlowSupplementalDisclosuresDetails" xlink:type="simple" xlink:href="pbmlf-20260131.xsd#idr_Disclosure11SupplementalDisclosureWithRespectToCashFlowsScheduleOfCashFlowSupplementalDisclosuresDetails"/>
	<link:definitionLink xlink:type="extended" xlink:role="http://www.pacificbooker.com/20260131/role/idr_Disclosure11SupplementalDisclosureWithRespectToCashFlowsScheduleOfCashFlowSupplementalDisclosuresDetails"/>
	<link:roleRef roleURI="http://www.pacificbooker.com/20260131/role/idr_Disclosure12IncomeTaxesScheduleOfIncomeTaxReconciliationDetails" xlink:type="simple" xlink:href="pbmlf-20260131.xsd#idr_Disclosure12IncomeTaxesScheduleOfIncomeTaxReconciliationDetails"/>
	<link:definitionLink xlink:type="extended" xlink:role="http://www.pacificbooker.com/20260131/role/idr_Disclosure12IncomeTaxesScheduleOfIncomeTaxReconciliationDetails"/>
	<link:roleRef roleURI="http://www.pacificbooker.com/20260131/role/idr_Disclosure12IncomeTaxesScheduleOfUnrecognizedDeductibleTemporaryDifferencesDetails" xlink:type="simple" xlink:href="pbmlf-20260131.xsd#idr_Disclosure12IncomeTaxesScheduleOfUnrecognizedDeductibleTemporaryDifferencesDetails"/>
	<link:definitionLink xlink:type="extended" xlink:role="http://www.pacificbooker.com/20260131/role/idr_Disclosure12IncomeTaxesScheduleOfUnrecognizedDeductibleTemporaryDifferencesDetails"/>
	<link:roleRef roleURI="http://www.pacificbooker.com/20260131/role/idr_Disclosure12IncomeTaxesScheduleOfExpirationOfNonCapitalLossCarryForwardsDetails" xlink:type="simple" xlink:href="pbmlf-20260131.xsd#idr_Disclosure12IncomeTaxesScheduleOfExpirationOfNonCapitalLossCarryForwardsDetails"/>
	<link:definitionLink xlink:type="extended" xlink:role="http://www.pacificbooker.com/20260131/role/idr_Disclosure12IncomeTaxesScheduleOfExpirationOfNonCapitalLossCarryForwardsDetails">
		<link:loc xlink:type='locator' xlink:href='https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_StatementTable' xlink:label='us-gaap_StatementTable'/>
		<link:loc xlink:type='locator' xlink:href='https://xbrl.ifrs.org/taxonomy/2025-03-27/full_ifrs/full_ifrs-cor_2025-03-27.xsd#ifrs-full_TemporaryDifferenceUnusedTaxLossesAndUnusedTaxCreditsAxis' xlink:label='ifrs-full_TemporaryDifferenceUnusedTaxLossesAndUnusedTaxCreditsAxis'/>
		<link:definitionArc xlink:type='arc' xlink:arcrole='http://xbrl.org/int/dim/arcrole/hypercube-dimension' xlink:from='us-gaap_StatementTable' xlink:to='ifrs-full_TemporaryDifferenceUnusedTaxLossesAndUnusedTaxCreditsAxis' use='optional' order='1.0' xbrldt:contextElement='segment'/>
		<link:loc xlink:type='locator' xlink:href='pbmlf-20260131.xsd#fil_TemporaryDifferenceUnusedTaxLossesAndUnusedTaxCreditsMember' xlink:label='fil_TemporaryDifferenceUnusedTaxLossesAndUnusedTaxCreditsMember'/>
		<link:definitionArc xlink:type='arc' xlink:arcrole='http://xbrl.org/int/dim/arcrole/dimension-domain' xlink:from='ifrs-full_TemporaryDifferenceUnusedTaxLossesAndUnusedTaxCreditsAxis' xlink:to='fil_TemporaryDifferenceUnusedTaxLossesAndUnusedTaxCreditsMember' use='optional' order='1.0'/>
		<link:loc xlink:type='locator' xlink:href='pbmlf-20260131.xsd#fil_TemporaryDifferenceUnusedTaxLossesAndUnusedTaxCreditsMember' xlink:label='fil_TemporaryDifferenceUnusedTaxLossesAndUnusedTaxCreditsMember_1'/>
		<link:definitionArc xlink:type='arc' xlink:arcrole='http://xbrl.org/int/dim/arcrole/dimension-default' xlink:from='ifrs-full_TemporaryDifferenceUnusedTaxLossesAndUnusedTaxCreditsAxis' xlink:to='fil_TemporaryDifferenceUnusedTaxLossesAndUnusedTaxCreditsMember_1' use='optional' order='1.0' xbrldt:contextElement='segment'/>
		<link:loc xlink:type='locator' xlink:href='pbmlf-20260131.xsd#fil_YearOfExpiration2027Member' xlink:label='fil_YearOfExpiration2027Member'/>
		<link:definitionArc xlink:type='arc' xlink:arcrole='http://xbrl.org/int/dim/arcrole/domain-member' xlink:from='fil_TemporaryDifferenceUnusedTaxLossesAndUnusedTaxCreditsMember' xlink:to='fil_YearOfExpiration2027Member' use='optional' order='1.0'/>
		<link:loc xlink:type='locator' xlink:href='pbmlf-20260131.xsd#fil_YearOfExpiration2028Member' xlink:label='fil_YearOfExpiration2028Member'/>
		<link:definitionArc xlink:type='arc' xlink:arcrole='http://xbrl.org/int/dim/arcrole/domain-member' xlink:from='fil_TemporaryDifferenceUnusedTaxLossesAndUnusedTaxCreditsMember' xlink:to='fil_YearOfExpiration2028Member' use='optional' order='2.0'/>
		<link:loc xlink:type='locator' xlink:href='pbmlf-20260131.xsd#fil_YearOfExpiration2029Member' xlink:label='fil_YearOfExpiration2029Member'/>
		<link:definitionArc xlink:type='arc' xlink:arcrole='http://xbrl.org/int/dim/arcrole/domain-member' xlink:from='fil_TemporaryDifferenceUnusedTaxLossesAndUnusedTaxCreditsMember' xlink:to='fil_YearOfExpiration2029Member' use='optional' order='3.0'/>
		<link:loc xlink:type='locator' xlink:href='pbmlf-20260131.xsd#fil_YearOfExpiration2030Member' xlink:label='fil_YearOfExpiration2030Member'/>
		<link:definitionArc xlink:type='arc' xlink:arcrole='http://xbrl.org/int/dim/arcrole/domain-member' xlink:from='fil_TemporaryDifferenceUnusedTaxLossesAndUnusedTaxCreditsMember' xlink:to='fil_YearOfExpiration2030Member' use='optional' order='4.0'/>
		<link:loc xlink:type='locator' xlink:href='pbmlf-20260131.xsd#fil_YearOfExpiration2031Member' xlink:label='fil_YearOfExpiration2031Member'/>
		<link:definitionArc xlink:type='arc' xlink:arcrole='http://xbrl.org/int/dim/arcrole/domain-member' xlink:from='fil_TemporaryDifferenceUnusedTaxLossesAndUnusedTaxCreditsMember' xlink:to='fil_YearOfExpiration2031Member' use='optional' order='5.0'/>
		<link:loc xlink:type='locator' xlink:href='pbmlf-20260131.xsd#fil_YearOfExpiration2032Member' xlink:label='fil_YearOfExpiration2032Member'/>
		<link:definitionArc xlink:type='arc' xlink:arcrole='http://xbrl.org/int/dim/arcrole/domain-member' xlink:from='fil_TemporaryDifferenceUnusedTaxLossesAndUnusedTaxCreditsMember' xlink:to='fil_YearOfExpiration2032Member' use='optional' order='6.0'/>
		<link:loc xlink:type='locator' xlink:href='pbmlf-20260131.xsd#fil_YearOfExpiration2033Member' xlink:label='fil_YearOfExpiration2033Member'/>
		<link:definitionArc xlink:type='arc' xlink:arcrole='http://xbrl.org/int/dim/arcrole/domain-member' xlink:from='fil_TemporaryDifferenceUnusedTaxLossesAndUnusedTaxCreditsMember' xlink:to='fil_YearOfExpiration2033Member' use='optional' order='7.0'/>
		<link:loc xlink:type='locator' xlink:href='pbmlf-20260131.xsd#fil_YearOfExpiration2034Member' xlink:label='fil_YearOfExpiration2034Member'/>
		<link:definitionArc xlink:type='arc' xlink:arcrole='http://xbrl.org/int/dim/arcrole/domain-member' xlink:from='fil_TemporaryDifferenceUnusedTaxLossesAndUnusedTaxCreditsMember' xlink:to='fil_YearOfExpiration2034Member' use='optional' order='8.0'/>
		<link:loc xlink:type='locator' xlink:href='pbmlf-20260131.xsd#fil_YearOfExpiration2035Member' xlink:label='fil_YearOfExpiration2035Member'/>
		<link:definitionArc xlink:type='arc' xlink:arcrole='http://xbrl.org/int/dim/arcrole/domain-member' xlink:from='fil_TemporaryDifferenceUnusedTaxLossesAndUnusedTaxCreditsMember' xlink:to='fil_YearOfExpiration2035Member' use='optional' order='9.0'/>
		<link:loc xlink:type='locator' xlink:href='pbmlf-20260131.xsd#fil_YearOfExpiration2036Member' xlink:label='fil_YearOfExpiration2036Member'/>
		<link:definitionArc xlink:type='arc' xlink:arcrole='http://xbrl.org/int/dim/arcrole/domain-member' xlink:from='fil_TemporaryDifferenceUnusedTaxLossesAndUnusedTaxCreditsMember' xlink:to='fil_YearOfExpiration2036Member' use='optional' order='10.0'/>
		<link:loc xlink:type='locator' xlink:href='pbmlf-20260131.xsd#fil_YearOfExpiration2037Member' xlink:label='fil_YearOfExpiration2037Member'/>
		<link:definitionArc xlink:type='arc' xlink:arcrole='http://xbrl.org/int/dim/arcrole/domain-member' xlink:from='fil_TemporaryDifferenceUnusedTaxLossesAndUnusedTaxCreditsMember' xlink:to='fil_YearOfExpiration2037Member' use='optional' order='11.0'/>
		<link:loc xlink:type='locator' xlink:href='pbmlf-20260131.xsd#fil_YearOfExpiration2038Member' xlink:label='fil_YearOfExpiration2038Member'/>
		<link:definitionArc xlink:type='arc' xlink:arcrole='http://xbrl.org/int/dim/arcrole/domain-member' xlink:from='fil_TemporaryDifferenceUnusedTaxLossesAndUnusedTaxCreditsMember' xlink:to='fil_YearOfExpiration2038Member' use='optional' order='12.0'/>
		<link:loc xlink:type='locator' xlink:href='pbmlf-20260131.xsd#fil_YearOfExpiration2039Member' xlink:label='fil_YearOfExpiration2039Member'/>
		<link:definitionArc xlink:type='arc' xlink:arcrole='http://xbrl.org/int/dim/arcrole/domain-member' xlink:from='fil_TemporaryDifferenceUnusedTaxLossesAndUnusedTaxCreditsMember' xlink:to='fil_YearOfExpiration2039Member' use='optional' order='13.0'/>
		<link:loc xlink:type='locator' xlink:href='pbmlf-20260131.xsd#fil_YearOfExpiration2040Member' xlink:label='fil_YearOfExpiration2040Member'/>
		<link:definitionArc xlink:type='arc' xlink:arcrole='http://xbrl.org/int/dim/arcrole/domain-member' xlink:from='fil_TemporaryDifferenceUnusedTaxLossesAndUnusedTaxCreditsMember' xlink:to='fil_YearOfExpiration2040Member' use='optional' order='14.0'/>
		<link:loc xlink:type='locator' xlink:href='pbmlf-20260131.xsd#fil_YearOfExpiration2041Member' xlink:label='fil_YearOfExpiration2041Member'/>
		<link:definitionArc xlink:type='arc' xlink:arcrole='http://xbrl.org/int/dim/arcrole/domain-member' xlink:from='fil_TemporaryDifferenceUnusedTaxLossesAndUnusedTaxCreditsMember' xlink:to='fil_YearOfExpiration2041Member' use='optional' order='15.0'/>
		<link:loc xlink:type='locator' xlink:href='pbmlf-20260131.xsd#fil_YearOfExpiration2042Member' xlink:label='fil_YearOfExpiration2042Member'/>
		<link:definitionArc xlink:type='arc' xlink:arcrole='http://xbrl.org/int/dim/arcrole/domain-member' xlink:from='fil_TemporaryDifferenceUnusedTaxLossesAndUnusedTaxCreditsMember' xlink:to='fil_YearOfExpiration2042Member' use='optional' order='16.0'/>
		<link:loc xlink:type='locator' xlink:href='pbmlf-20260131.xsd#fil_YearOfExpiration2043Member' xlink:label='fil_YearOfExpiration2043Member'/>
		<link:definitionArc xlink:type='arc' xlink:arcrole='http://xbrl.org/int/dim/arcrole/domain-member' xlink:from='fil_TemporaryDifferenceUnusedTaxLossesAndUnusedTaxCreditsMember' xlink:to='fil_YearOfExpiration2043Member' use='optional' order='17.0'/>
		<link:loc xlink:type='locator' xlink:href='pbmlf-20260131.xsd#fil_YearOfExpiration2044Member' xlink:label='fil_YearOfExpiration2044Member'/>
		<link:definitionArc xlink:type='arc' xlink:arcrole='http://xbrl.org/int/dim/arcrole/domain-member' xlink:from='fil_TemporaryDifferenceUnusedTaxLossesAndUnusedTaxCreditsMember' xlink:to='fil_YearOfExpiration2044Member' use='optional' order='18.0'/>
		<link:loc xlink:type='locator' xlink:href='pbmlf-20260131.xsd#fil_YearOfExpiration2045Member' xlink:label='fil_YearOfExpiration2045Member'/>
		<link:definitionArc xlink:type='arc' xlink:arcrole='http://xbrl.org/int/dim/arcrole/domain-member' xlink:from='fil_TemporaryDifferenceUnusedTaxLossesAndUnusedTaxCreditsMember' xlink:to='fil_YearOfExpiration2045Member' use='optional' order='19.0'/>
		<link:loc xlink:type='locator' xlink:href='pbmlf-20260131.xsd#fil_YearOfExpiration2046Member' xlink:label='fil_YearOfExpiration2046Member'/>
		<link:definitionArc xlink:type='arc' xlink:arcrole='http://xbrl.org/int/dim/arcrole/domain-member' xlink:from='fil_TemporaryDifferenceUnusedTaxLossesAndUnusedTaxCreditsMember' xlink:to='fil_YearOfExpiration2046Member' use='optional' order='20.0'/>
		<link:loc xlink:type='locator' xlink:href='https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_StatementLineItems' xlink:label='us-gaap_StatementLineItems'/>
		<link:definitionArc xlink:type='arc' xlink:arcrole='http://xbrl.org/int/dim/arcrole/all' xlink:from='us-gaap_StatementLineItems' xlink:to='us-gaap_StatementTable' order='0.5' xbrldt:closed='true' xbrldt:contextElement='segment' use='optional'/>
		<link:loc xlink:type='locator' xlink:href='pbmlf-20260131.xsd#fil_NonCapitalLossCarryForwards' xlink:label='fil_NonCapitalLossCarryForwards'/>
		<link:definitionArc xlink:type='arc' xlink:arcrole='http://xbrl.org/int/dim/arcrole/domain-member' xlink:from='us-gaap_StatementLineItems' xlink:to='fil_NonCapitalLossCarryForwards' use='optional' order='1.0'/>
	</link:definitionLink>
	<link:roleRef roleURI="http://www.pacificbooker.com/20260131/role/idr_Disclosure14SegmentedInformationDetails" xlink:type="simple" xlink:href="pbmlf-20260131.xsd#idr_Disclosure14SegmentedInformationDetails"/>
	<link:definitionLink xlink:type="extended" xlink:role="http://www.pacificbooker.com/20260131/role/idr_Disclosure14SegmentedInformationDetails"/>
	<link:roleRef roleURI="http://www.pacificbooker.com/20260131/role/idr_Disclosure17SubsequentEventsDetails" xlink:type="simple" xlink:href="pbmlf-20260131.xsd#idr_Disclosure17SubsequentEventsDetails"/>
	<link:definitionLink xlink:type="extended" xlink:role="http://www.pacificbooker.com/20260131/role/idr_Disclosure17SubsequentEventsDetails">
		<link:loc xlink:type='locator' xlink:href='https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_StatementTable' xlink:label='us-gaap_StatementTable'/>
		<link:loc xlink:type='locator' xlink:href='https://xbrl.fasb.org/srt/2025/elts/srt-2025.xsd#srt_StatementScenarioAxis' xlink:label='srt_StatementScenarioAxis'/>
		<link:definitionArc xlink:type='arc' xlink:arcrole='http://xbrl.org/int/dim/arcrole/hypercube-dimension' xlink:from='us-gaap_StatementTable' xlink:to='srt_StatementScenarioAxis' use='optional' order='1.0' xbrldt:contextElement='segment'/>
		<link:loc xlink:type='locator' xlink:href='https://xbrl.fasb.org/srt/2025/elts/srt-2025.xsd#srt_ScenarioUnspecifiedDomain' xlink:label='srt_ScenarioUnspecifiedDomain'/>
		<link:definitionArc xlink:type='arc' xlink:arcrole='http://xbrl.org/int/dim/arcrole/dimension-domain' xlink:from='srt_StatementScenarioAxis' xlink:to='srt_ScenarioUnspecifiedDomain' use='optional' order='1.0'/>
		<link:loc xlink:type='locator' xlink:href='https://xbrl.fasb.org/srt/2025/elts/srt-2025.xsd#srt_ScenarioUnspecifiedDomain' xlink:label='srt_ScenarioUnspecifiedDomain_1'/>
		<link:definitionArc xlink:type='arc' xlink:arcrole='http://xbrl.org/int/dim/arcrole/dimension-default' xlink:from='srt_StatementScenarioAxis' xlink:to='srt_ScenarioUnspecifiedDomain_1' use='optional' order='1.0' xbrldt:contextElement='segment'/>
		<link:loc xlink:type='locator' xlink:href='pbmlf-20260131.xsd#fil_SubsequentEvent1Member' xlink:label='fil_SubsequentEvent1Member'/>
		<link:definitionArc xlink:type='arc' xlink:arcrole='http://xbrl.org/int/dim/arcrole/domain-member' xlink:from='srt_ScenarioUnspecifiedDomain' xlink:to='fil_SubsequentEvent1Member' use='optional' order='1.0'/>
		<link:loc xlink:type='locator' xlink:href='pbmlf-20260131.xsd#fil_SubsequentEvent2Member' xlink:label='fil_SubsequentEvent2Member'/>
		<link:definitionArc xlink:type='arc' xlink:arcrole='http://xbrl.org/int/dim/arcrole/domain-member' xlink:from='srt_ScenarioUnspecifiedDomain' xlink:to='fil_SubsequentEvent2Member' use='optional' order='2.0'/>
		<link:loc xlink:type='locator' xlink:href='pbmlf-20260131.xsd#fil_SubsequentEvent3Member' xlink:label='fil_SubsequentEvent3Member'/>
		<link:definitionArc xlink:type='arc' xlink:arcrole='http://xbrl.org/int/dim/arcrole/domain-member' xlink:from='srt_ScenarioUnspecifiedDomain' xlink:to='fil_SubsequentEvent3Member' use='optional' order='3.0'/>
		<link:loc xlink:type='locator' xlink:href='https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_StatementLineItems' xlink:label='us-gaap_StatementLineItems'/>
		<link:definitionArc xlink:type='arc' xlink:arcrole='http://xbrl.org/int/dim/arcrole/all' xlink:from='us-gaap_StatementLineItems' xlink:to='us-gaap_StatementTable' order='0.5' xbrldt:closed='true' xbrldt:contextElement='segment' use='optional'/>
		<link:loc xlink:type='locator' xlink:href='https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_SubsequentEventDescription' xlink:label='us-gaap_SubsequentEventDescription'/>
		<link:definitionArc xlink:type='arc' xlink:arcrole='http://xbrl.org/int/dim/arcrole/domain-member' xlink:from='us-gaap_StatementLineItems' xlink:to='us-gaap_SubsequentEventDescription' use='optional' order='1.0'/>
		<link:loc xlink:type='locator' xlink:href='https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriod' xlink:label='us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriod'/>
		<link:definitionArc xlink:type='arc' xlink:arcrole='http://xbrl.org/int/dim/arcrole/domain-member' xlink:from='us-gaap_StatementLineItems' xlink:to='us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriod' use='optional' order='2.0'/>
		<link:loc xlink:type='locator' xlink:href='pbmlf-20260131.xsd#fil_ExercisePrice' xlink:label='fil_ExercisePrice'/>
		<link:definitionArc xlink:type='arc' xlink:arcrole='http://xbrl.org/int/dim/arcrole/domain-member' xlink:from='us-gaap_StatementLineItems' xlink:to='fil_ExercisePrice' use='optional' order='3.0'/>
		<link:loc xlink:type='locator' xlink:href='https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_SharesIssued' xlink:label='us-gaap_SharesIssued'/>
		<link:definitionArc xlink:type='arc' xlink:arcrole='http://xbrl.org/int/dim/arcrole/domain-member' xlink:from='us-gaap_StatementLineItems' xlink:to='us-gaap_SharesIssued' use='optional' order='4.0'/>
		<link:loc xlink:type='locator' xlink:href='https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_StockIssuedDuringPeriodValueShareBasedCompensation' xlink:label='us-gaap_StockIssuedDuringPeriodValueShareBasedCompensation'/>
		<link:definitionArc xlink:type='arc' xlink:arcrole='http://xbrl.org/int/dim/arcrole/domain-member' xlink:from='us-gaap_StatementLineItems' xlink:to='us-gaap_StockIssuedDuringPeriodValueShareBasedCompensation' use='optional' order='5.0'/>
	</link:definitionLink>
</link:linkbase>
