Dictionary

mother lode

noun

: the place where the largest amount of gold, silver, etc., in a particular area can be found

Full Definition of MOTHER LODE

1
:  the principal vein or lode of a region
2
:  a principal source or supply

Examples of MOTHER LODE

  1. <the university has long been a mother lode of athletic talent, with many alumni joining the rarefied ranks of the professionals>

First Known Use of MOTHER LODE

1863

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