mother lode
The term "mother lode" originates from mining and has extended to describe any abundant source of valuable materials or information.
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Definition
B2Geology
(technical)The main vein or deposit of a valuable mineral, especially gold.
Example
- The miners struck the mother lode after months of digging.
- Discovering the mother lode can transform the fortunes of a mining company.
B2General
(idiomatic)A major source or supply of something valuable or useful.
Example
- The library turned out to be a mother lode of historical documents.
- The startup found a mother lode of talent in the local university.
Similar
Terms that have similar or relatively close meanings to "mother lode":