Meaning of the word "gold mine" in English

What does "gold mine" mean in English? Explore the meaning, pronunciation, and specific usage of this word with Lingoland.

gold mine

US /ˈɡoʊld maɪn/
UK /ˈɡəʊld maɪn/

Noun

1.

a place where gold is extracted from the earth

Example:
The prospectors discovered a rich gold mine in the mountains.
Working in a gold mine was a dangerous but potentially lucrative job.
2.

a source of great wealth or profit

Example:
That old antique shop turned out to be a real gold mine for rare collectibles.
His new business venture quickly became a gold mine, generating huge profits.