Mother Lode Definition

noun
The main lode, or vein of ore, in a particular region or district.
Webster's New World
Any source regarded as particularly abundant or rich.
Webster's New World

(geology) A large or rich vein of gold or of another precious mineral from which other branches extend.

Wiktionary
Alternative form of mother lode.
Wiktionary
Synonyms:
  • champion lode

Other Word Forms of Mother Lode

Noun

Singular:
mother lode
Plural:
mother-lodes

Origin of Mother Lode

  • Probably from Spanish veta madre (“mother lode")

    From Wiktionary

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mother lode