a mine yielding gold.
a source of great wealth or profit, or any desirable thing.
a copious source or reserve of something required: a gold mine of information about antiques.
15 Quotes That Will Remind You To Believe In YourselfRead more in this article about some frequently asked questions and fun facts related to our definitions.
Origin of gold mine
late Middle English word dating back to 1425–75
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
British Dictionary definitions for gold mine
a place where gold ore is mined
a source of great wealth, profit, etc
Derived Formsgold-miner, noungold-mining, noun
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
Idioms and Phrases with gold mine
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]
The American Heritage® Idioms Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.