countermine

[ noun koun-ter-mahyn; verb koun-ter-mahyn, koun-ter-mahyn ]
/ noun ˈkaʊn tərˌmaɪn; verb ˌkaʊn tərˈmaɪn, ˈkaʊn tərˌmaɪn /

noun

Military. a mine intended to intercept or destroy an enemy mine.
a counterplot.

verb (used with object), coun·ter·mined, coun·ter·min·ing.

to oppose by a countermine.

verb (used without object), coun·ter·mined, coun·ter·min·ing.

to make a countermine.
Military. to intercept or destroy enemy mines.

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Origin of countermine

late Middle English word dating back to 1425–75; see origin at counter-, mine2
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2020

Example sentences from the Web for countermine

British Dictionary definitions for countermine

countermine

noun (ˈkaʊntəˌmaɪn)

military a tunnel dug to defeat similar activities by an enemy
a plot to frustrate another plot

verb (ˌkaʊntəˈmaɪn)

to frustrate by countermeasures
military to take measures to defeat the underground operations of (an enemy)
military to destroy enemy mines in (an area) with mines of one's own
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