gold mine
1 ENTRIES FOUND:
gold mine
noun
plural
gold mines
gold mine
noun
plural
gold mines
Britannica Dictionary definition of GOLD MINE
[count]
1
:
a place where gold is dug from the ground
:
a mine that produces gold
2
:
something that has or produces a lot of something desired (such as money)
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When she was the manager, the restaurant was a (real/veritable) gold mine! [=it was very profitable]
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The library is a gold mine of information.
