mother lode
noun
Definition of mother lode
1 : the principal vein or lode of a region
2 : a principal source or supply
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Examples of mother lode in a sentence
the university has long been a mother lode of athletic talent, with many alumni joining the rarefied ranks of the professionals
1863
First Known Use of mother lode
1863
MOTHER LODE Defined for English Language Learners
mother lode
noun
Definition of mother lode for English Language Learners
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: the place where the largest amount of gold, silver, etc., in a particular area can be found
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