<?xml version="1.0" encoding="US-ASCII" standalone="no"?>
    <!-- Field: Doc-Info; Name: Generator; Value: GoFiler Complete; Version: 6.3a -->
    <!-- Field: Doc-Info; Name: VendorURI; Value: https://www.novaworks.com -->
    <!-- Field: Doc-Info; Name: Status; Value: 0x00000000 -->
<link:linkbase xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:link="http://www.xbrl.org/2003/linkbase" xmlns:xbrldt="http://xbrl.org/2005/xbrldt" xmlns:xbrli="http://www.xbrl.org/2003/instance" xsi:schemaLocation="http://www.xbrl.org/2003/linkbase http://www.xbrl.org/2003/xbrl-linkbase-2003-12-31.xsd">
    <link:roleRef xlink:type="simple" xlink:href="https://xbrl.sec.gov/oef/2024q3/oef-2024q3.xsd#HoldingsByIndustrySector" roleURI="http://xbrl.sec.gov/oef/role/HoldingsByIndustrySector" />
    <link:roleRef xlink:type="simple" xlink:href="https://xbrl.sec.gov/oef/2024q3/oef-2024q3.xsd#HoldingsByGeographicRegion" roleURI="http://xbrl.sec.gov/oef/role/HoldingsByGeographicRegion" />
    <link:roleRef xlink:type="simple" xlink:href="https://xbrl.sec.gov/oef/2024q3/oef-2024q3.xsd#HoldingsByCreditQuality" roleURI="http://xbrl.sec.gov/oef/role/HoldingsByCreditQuality" />
    <link:roleRef xlink:type="simple" xlink:href="https://xbrl.sec.gov/oef/2024q3/oef-2024q3.xsd#HoldingsByMaturity" roleURI="http://xbrl.sec.gov/oef/role/HoldingsByMaturity" />
    <link:roleRef xlink:type="simple" xlink:href="https://xbrl.sec.gov/oef/2024q3/oef-2024q3.xsd#HoldingsByAssetCategory" roleURI="http://xbrl.sec.gov/oef/role/HoldingsByAssetCategory" />
    <link:roleRef xlink:type="simple" xlink:href="https://xbrl.sec.gov/oef/2024q3/oef-2024q3.xsd#HoldingsByOtherCategory" roleURI="http://xbrl.sec.gov/oef/role/HoldingsByOtherCategory" />
    <link:roleRef xlink:type="simple" xlink:href="https://xbrl.sec.gov/oef/2024q3/oef-2024q3.xsd#HoldingsByOtherCategory2" roleURI="http://xbrl.sec.gov/oef/role/HoldingsByOtherCategory2" />
    <link:roleRef xlink:type="simple" xlink:href="https://xbrl.sec.gov/oef/2024q3/oef-2024q3.xsd#LargestHoldings" roleURI="http://xbrl.sec.gov/oef/role/LargestHoldings" />
    <link:roleRef xlink:type="simple" xlink:href="https://xbrl.sec.gov/oef/2024q3/oef-2024q3.xsd#ProspectusOnly" roleURI="http://xbrl.sec.gov/rr/role/ProspectusOnly" />
    <link:roleRef xlink:type="simple" xlink:href="https://xbrl.sec.gov/oef/2024q3/oef-2024q3.xsd#RiskOnly" roleURI="http://xbrl.sec.gov/rr/role/RiskOnly" />
    <link:roleRef xlink:type="simple" xlink:href="https://xbrl.sec.gov/oef/2024q3/oef-2024q3.xsd#SeriesOnly" roleURI="http://xbrl.sec.gov/oef/role/SeriesOnly" />
    <link:roleRef xlink:type="simple" xlink:href="https://xbrl.sec.gov/oef/2024q3/oef-2024q3.xsd#ClassOnly" roleURI="http://xbrl.sec.gov/oef/role/ClassOnly" />
    <link:roleRef xlink:type="simple" xlink:href="https://xbrl.sec.gov/oef/2024q3/oef-2024q3.xsd#PerformanceMeasureOnly" roleURI="http://xbrl.sec.gov/rr/role/PerformanceMeasureOnly" />
    <link:roleRef xlink:type="simple" xlink:href="https://xbrl.sec.gov/oef/2024q3/oef-2024q3.xsd#HoldingAssetCategoryOnly" roleURI="http://xbrl.sec.gov/oef/role/HoldingAssetCategoryOnly" />
    <link:roleRef xlink:type="simple" xlink:href="https://xbrl.sec.gov/oef/2024q3/oef-2024q3.xsd#BroadBasedIndexOnly" roleURI="http://xbrl.sec.gov/oef/role/BroadBasedIndexOnly" />
    <link:roleRef xlink:type="simple" xlink:href="https://xbrl.sec.gov/oef/2024q3/oef-2024q3.xsd#AdditionalIndexOnly" roleURI="http://xbrl.sec.gov/oef/role/AdditionalIndexOnly" />
    <link:roleRef xlink:type="simple" xlink:href="https://xbrl.sec.gov/oef/2024q3/oef-2024q3.xsd#IndustrySectorOnly" roleURI="http://xbrl.sec.gov/oef/role/IndustrySectorOnly" />
    <link:roleRef xlink:type="simple" xlink:href="https://xbrl.sec.gov/oef/2024q3/oef-2024q3.xsd#GeographicRegionOnly" roleURI="http://xbrl.sec.gov/oef/role/GeographicRegionOnly" />
    <link:roleRef xlink:type="simple" xlink:href="https://xbrl.sec.gov/oef/2024q3/oef-2024q3.xsd#CreditQualityOnly" roleURI="http://xbrl.sec.gov/oef/role/CreditQualityOnly" />
    <link:roleRef xlink:type="simple" xlink:href="https://xbrl.sec.gov/oef/2024q3/oef-2024q3.xsd#MaturityOnly" roleURI="http://xbrl.sec.gov/oef/role/MaturityOnly" />
    <link:roleRef xlink:type="simple" xlink:href="https://xbrl.sec.gov/oef/2024q3/oef-2024q3.xsd#Other1CategoryOnly" roleURI="http://xbrl.sec.gov/oef/role/Other1CategoryOnly" />
    <link:roleRef xlink:type="simple" xlink:href="https://xbrl.sec.gov/oef/2024q3/oef-2024q3.xsd#Other2CategoryOnly" roleURI="http://xbrl.sec.gov/oef/role/Other2CategoryOnly" />
    <link:roleRef xlink:type="simple" xlink:href="https://xbrl.sec.gov/oef/2024q3/oef-2024q3.xsd#LargestHoldingOnly" roleURI="http://xbrl.sec.gov/oef/role/LargestHoldingOnly" />
    <link:roleRef xlink:type="simple" xlink:href="https://xbrl.sec.gov/oef/2024q3/oef-2024q3.xsd#SalesLoadOnly" roleURI="http://xbrl.sec.gov/oef/role/SalesLoadOnly" />
    <link:roleRef xlink:type="simple" xlink:href="https://xbrl.sec.gov/oef/2024q3/oef-2024q3.xsd#HoldingMeasureOnly" roleURI="http://xbrl.sec.gov/oef/role/HoldingMeasureOnly" />
    <link:roleRef xlink:type="simple" xlink:href="https://xbrl.sec.gov/oef/2024q3/oef-2024q3.xsd#ValueMeasureOnly" roleURI="http://xbrl.sec.gov/oef/role/ValueMeasureOnly" />
    <link:arcroleRef xlink:type="simple" xlink:href="http://www.xbrl.org/2005/xbrldt-2005.xsd#hypercube-dimension" arcroleURI="http://xbrl.org/int/dim/arcrole/hypercube-dimension" />
    <link:arcroleRef xlink:type="simple" xlink:href="http://www.xbrl.org/2005/xbrldt-2005.xsd#dimension-domain" arcroleURI="http://xbrl.org/int/dim/arcrole/dimension-domain" />
    <link:arcroleRef xlink:type="simple" xlink:href="http://www.xbrl.org/2005/xbrldt-2005.xsd#domain-member" arcroleURI="http://xbrl.org/int/dim/arcrole/domain-member" />
    <link:arcroleRef xlink:type="simple" xlink:href="http://www.xbrl.org/2005/xbrldt-2005.xsd#all" arcroleURI="http://xbrl.org/int/dim/arcrole/all" />
    <link:arcroleRef xlink:type="simple" xlink:href="http://www.xbrl.org/2005/xbrldt-2005.xsd#notAll" arcroleURI="http://xbrl.org/int/dim/arcrole/notAll" />
    <link:arcroleRef xlink:type="simple" xlink:href="http://www.xbrl.org/2005/xbrldt-2005.xsd#dimension-default" arcroleURI="http://xbrl.org/int/dim/arcrole/dimension-default" />
    <link:definitionLink xlink:type="extended" xlink:role="http://xbrl.sec.gov/rr/role/ProspectusOnly" />
    <link:definitionLink xlink:type="extended" xlink:role="http://xbrl.sec.gov/rr/role/RiskOnly" />
    <link:definitionLink xlink:type="extended" xlink:role="http://xbrl.sec.gov/oef/role/SeriesOnly" />
    <link:definitionLink xlink:type="extended" xlink:role="http://xbrl.sec.gov/oef/role/ClassOnly">
      <link:loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/oef/2024q3/oef-2024q3.xsd#oef_ShareClassDomain" xlink:label="loc_oefShareClassDomain" />
      <link:loc xlink:type="locator" xlink:href="tgfrx-20251130.xsd#TGFRX_C000012945Member" xlink:label="loc_TGFRXC000012945Member" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_oefShareClassDomain" xlink:to="loc_TGFRXC000012945Member" xlink:type="arc" order="0" />
    </link:definitionLink>
    <link:definitionLink xlink:type="extended" xlink:role="http://xbrl.sec.gov/rr/role/PerformanceMeasureOnly" />
    <link:definitionLink xlink:type="extended" xlink:role="http://xbrl.sec.gov/oef/role/HoldingAssetCategoryOnly" />
    <link:definitionLink xlink:type="extended" xlink:role="http://xbrl.sec.gov/oef/role/BroadBasedIndexOnly">
      <link:loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/oef/2024q3/oef-2024q3.xsd#oef_BroadBasedIndexDomain" xlink:label="loc_oefBroadBasedIndexDomain" />
      <link:loc xlink:type="locator" xlink:href="tgfrx-20251130.xsd#TGFRX_Wilshire2500GrowthFundMember" xlink:label="loc_TGFRXWilshire2500GrowthFundMember" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_oefBroadBasedIndexDomain" xlink:to="loc_TGFRXWilshire2500GrowthFundMember" xlink:type="arc" order="0" />
    </link:definitionLink>
    <link:definitionLink xlink:type="extended" xlink:role="http://xbrl.sec.gov/oef/role/AdditionalIndexOnly" />
    <link:definitionLink xlink:type="extended" xlink:role="http://xbrl.sec.gov/oef/role/IndustrySectorOnly">
      <link:loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/oef/2024q3/oef-2024q3.xsd#oef_IndustrySectorDomain" xlink:label="loc_oefIndustrySectorDomain" />
      <link:loc xlink:type="locator" xlink:href="tgfrx-20251130.xsd#TGFRX_CashEquivalentMember" xlink:label="loc_TGFRXCashEquivalentMember" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_oefIndustrySectorDomain" xlink:to="loc_TGFRXCashEquivalentMember" xlink:type="arc" order="0" />
      <link:loc xlink:type="locator" xlink:href="tgfrx-20251130.xsd#TGFRX_CommServicesMember" xlink:label="loc_TGFRXCommServicesMember" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_oefIndustrySectorDomain" xlink:to="loc_TGFRXCommServicesMember" xlink:type="arc" order="10" />
      <link:loc xlink:type="locator" xlink:href="tgfrx-20251130.xsd#TGFRX_ConsumerDiscretionaryMember" xlink:label="loc_TGFRXConsumerDiscretionaryMember" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_oefIndustrySectorDomain" xlink:to="loc_TGFRXConsumerDiscretionaryMember" xlink:type="arc" order="20" />
      <link:loc xlink:type="locator" xlink:href="tgfrx-20251130.xsd#TGFRX_ConsumerStaplesMember" xlink:label="loc_TGFRXConsumerStaplesMember" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_oefIndustrySectorDomain" xlink:to="loc_TGFRXConsumerStaplesMember" xlink:type="arc" order="30" />
      <link:loc xlink:type="locator" xlink:href="tgfrx-20251130.xsd#TGFRX_EnegryMember" xlink:label="loc_TGFRXEnegryMember" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_oefIndustrySectorDomain" xlink:to="loc_TGFRXEnegryMember" xlink:type="arc" order="40" />
      <link:loc xlink:type="locator" xlink:href="tgfrx-20251130.xsd#TGFRX_FinancialsMember" xlink:label="loc_TGFRXFinancialsMember" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_oefIndustrySectorDomain" xlink:to="loc_TGFRXFinancialsMember" xlink:type="arc" order="50" />
      <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_HealthCareMember" xlink:label="loc_us-gaapHealthCareMember" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_oefIndustrySectorDomain" xlink:to="loc_us-gaapHealthCareMember" xlink:type="arc" order="60" />
      <link:loc xlink:type="locator" xlink:href="tgfrx-20251130.xsd#TGFRX_IndustrialsMember" xlink:label="loc_TGFRXIndustrialsMember" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_oefIndustrySectorDomain" xlink:to="loc_TGFRXIndustrialsMember" xlink:type="arc" order="70" />
      <link:loc xlink:type="locator" xlink:href="tgfrx-20251130.xsd#TGFRX_InfoTechMember" xlink:label="loc_TGFRXInfoTechMember" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_oefIndustrySectorDomain" xlink:to="loc_TGFRXInfoTechMember" xlink:type="arc" order="80" />
      <link:loc xlink:type="locator" xlink:href="tgfrx-20251130.xsd#TGFRX_MaterialsMember" xlink:label="loc_TGFRXMaterialsMember" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_oefIndustrySectorDomain" xlink:to="loc_TGFRXMaterialsMember" xlink:type="arc" order="90" />
    </link:definitionLink>
    <link:definitionLink xlink:type="extended" xlink:role="http://xbrl.sec.gov/oef/role/GeographicRegionOnly" />
    <link:definitionLink xlink:type="extended" xlink:role="http://xbrl.sec.gov/oef/role/CreditQualityOnly" />
    <link:definitionLink xlink:type="extended" xlink:role="http://xbrl.sec.gov/oef/role/MaturityOnly" />
    <link:definitionLink xlink:type="extended" xlink:role="http://xbrl.sec.gov/oef/role/Other1CategoryOnly" />
    <link:definitionLink xlink:type="extended" xlink:role="http://xbrl.sec.gov/oef/role/Other2CategoryOnly" />
    <link:definitionLink xlink:type="extended" xlink:role="http://xbrl.sec.gov/oef/role/LargestHoldingOnly">
      <link:loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/oef/2024q3/oef-2024q3.xsd#oef_LargestHoldingsDomain" xlink:label="loc_oefLargestHoldingsDomain" />
      <link:loc xlink:type="locator" xlink:href="tgfrx-20251130.xsd#TGFRX_CorceptTherapeuticsMember" xlink:label="loc_TGFRXCorceptTherapeuticsMember" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_oefLargestHoldingsDomain" xlink:to="loc_TGFRXCorceptTherapeuticsMember" xlink:type="arc" order="0" />
      <link:loc xlink:type="locator" xlink:href="tgfrx-20251130.xsd#TGFRX_NuvationBioMember" xlink:label="loc_TGFRXNuvationBioMember" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_oefLargestHoldingsDomain" xlink:to="loc_TGFRXNuvationBioMember" xlink:type="arc" order="10" />
      <link:loc xlink:type="locator" xlink:href="tgfrx-20251130.xsd#TGFRX_HuntingtonConservationMember" xlink:label="loc_TGFRXHuntingtonConservationMember" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_oefLargestHoldingsDomain" xlink:to="loc_TGFRXHuntingtonConservationMember" xlink:type="arc" order="20" />
      <link:loc xlink:type="locator" xlink:href="tgfrx-20251130.xsd#TGFRX_NvidiaMember" xlink:label="loc_TGFRXNvidiaMember" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_oefLargestHoldingsDomain" xlink:to="loc_TGFRXNvidiaMember" xlink:type="arc" order="30" />
      <link:loc xlink:type="locator" xlink:href="tgfrx-20251130.xsd#TGFRX_UntiedStatesAntimonyMember" xlink:label="loc_TGFRXUntiedStatesAntimonyMember" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_oefLargestHoldingsDomain" xlink:to="loc_TGFRXUntiedStatesAntimonyMember" xlink:type="arc" order="40" />
      <link:loc xlink:type="locator" xlink:href="tgfrx-20251130.xsd#TGFRX_SymboticMember" xlink:label="loc_TGFRXSymboticMember" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_oefLargestHoldingsDomain" xlink:to="loc_TGFRXSymboticMember" xlink:type="arc" order="50" />
      <link:loc xlink:type="locator" xlink:href="tgfrx-20251130.xsd#TGFRX_AppleMember" xlink:label="loc_TGFRXAppleMember" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_oefLargestHoldingsDomain" xlink:to="loc_TGFRXAppleMember" xlink:type="arc" order="60" />
      <link:loc xlink:type="locator" xlink:href="tgfrx-20251130.xsd#TGFRX_NextGenEnergyMember" xlink:label="loc_TGFRXNextGenEnergyMember" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_oefLargestHoldingsDomain" xlink:to="loc_TGFRXNextGenEnergyMember" xlink:type="arc" order="70" />
      <link:loc xlink:type="locator" xlink:href="tgfrx-20251130.xsd#TGFRX_CatalyustPharmaceuticalsMember" xlink:label="loc_TGFRXCatalyustPharmaceuticalsMember" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_oefLargestHoldingsDomain" xlink:to="loc_TGFRXCatalyustPharmaceuticalsMember" xlink:type="arc" order="80" />
      <link:loc xlink:type="locator" xlink:href="tgfrx-20251130.xsd#TGFRX_AppliedMaterialsMember" xlink:label="loc_TGFRXAppliedMaterialsMember" />
      <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_oefLargestHoldingsDomain" xlink:to="loc_TGFRXAppliedMaterialsMember" xlink:type="arc" order="90" />
    </link:definitionLink>
    <link:definitionLink xlink:type="extended" xlink:role="http://xbrl.sec.gov/oef/role/SalesLoadOnly" />
</link:linkbase>
