Last modified on 9 February 2013, at 06:09
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- A mine for gold ore or metal.
- South Africa has many goldmines.
- (idiomatic) A very profitable economic venture.
- This oil deposit is a regular gold mine. We make more and more money every year!
- (idiomatic) A plentiful stockpile of something sought after.
- The Smithsonian Institute is a goldmine of knowledge, but like most mines, you have to dig for the good stuff.
mine for gold
very profitable economic venture
reserve of something sought after