gold mine

noun

1. a mine yielding gold.
2. a source of great wealth or profit, or any desirable thing.
3. a copious source or reserve of something required:

   a gold mine of information about antiques.

gold mine

noun

1. a place where gold ore is mined
2. a source of great wealth, profit, etc

Derived Forms

• ˈgold-ˌminer, noun
• ˈgold-ˌmining, noun

Word History and Origins

Origin of gold mine¹

late Middle English word dating back to 1425–75

Idioms and Phrases

A rich, plentiful source of wealth or some other desirable thing, as in That business proved to be a gold mine , or She's a gold mine of information about the industry . [First half of 1800s]

Example Sentences

The Iraqi cell phone network was a potential intelligence gold mine.

From The Daily Beast

Like a Kinsey Report for the big-data era, there's a gold mine of findings here to titter about.

From The Daily Beast

“For these companies, the current situation is a gold mine,” Teret said.

From The Daily Beast

It also happens to be a gold mine of soul food restaurants that are anything but corporate in character.

From The Daily Beast

It seems the answer is no—World War II and its surrounding events continue to be a gold mine for writers and filmmakers.

From The Daily Beast

Believed there was a gold mine, or somethin' like that, under the south medder—'D you ever hear such a thing!

From Project Gutenberg

Here is a gold-mine for the makers of boys' books of all future generations to quarry in.

From Project Gutenberg

She confidently expects to discover a gold mine, and so that's another reason why she thinks Allen ought to be here.

From Project Gutenberg

The development of the self-binding reaper on our western grain-fields has opened a gold mine for Sisal cordage.

From Project Gutenberg

For mind is really more honorable than muscle, yet when these two met in a gold mine it fared ill with mind.

From Project Gutenberg