a mine the opening of which is dug into an outcrop of coal or ore.
an underground placer mine.
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Question 1 of 9
You may have read the word "simmer" in a recipe or two, but what does it really mean?
Origin of drift mine
An Americanism dating back to 1885–90
Words nearby drift mine
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2020