gold mine

noun

: a rich source of something desired

Synonyms

• treasure trove
• repository
• mother lode
• mine

Examples of gold mine in a Sentence

The library is a gold mine of information.

the estate sale promises to be a gold mine for antique dealers

Recent Examples on the Web

Fast-forward to 2026, where RMN has gone beyond a source of driving revenue three years ago, to evolving into a retail media ecosystem that’s become a brand-building, partnership-attracting, and analytics gold mine. —Shelley E. Kohan, Forbes.com, 2 Sep. 2025

The next gold mine won’t be found in algorithms or automation alone, but in the uniquely human qualities that cannot be coded. —Paul Hudson, Fortune, 2 Sep. 2025

Maidment, a study co-lead, said the discovery showed that a lot more research needs to be done in Africa, with countries like Morocco an untapped gold mine for dinosaur research. —Jay Ganglani, NBC news, 28 Aug. 2025

While no financial details were stolen, experts warn that this information is still a gold mine for cybercriminals. —Kurt Knutsson, FOXNews.com, 18 Aug. 2025

Word History

First Known Use

1605, in the meaning defined above

Rhymes for gold mine

• affine
• airline
• align
• aline
• assign
• baseline
• beamline
• benign
• bloodline
• bovine
• byline
• canine