countermine

coun·ter·mine  (kountr-mn)

v. coun·ter·mined, coun·ter·min·ing, coun·ter·mines

v.tr.

1. To frustrate or defeat by secret and opposite measures.

2. To make or use a countermine against.

v.intr.

To make or lay down countermines.

n. (kountr-mn)

1. A tunnel dug to intercept and destroy an enemy's mine.

2. A plot to frustrate or defeat an attack.

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countermine

n [ˈkaʊntəˌmaɪn]

1. (Military) Military a tunnel dug to defeat similar activities by an enemy

2. a plot to frustrate another plot

vb [ˌkaʊntəˈmaɪn]

1. to frustrate by countermeasures

2. (Military) Military to take measures to defeat the underground operations of (an enemy)

3. (Military) Military to destroy enemy mines in (an area) with mines of one's own

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To explode the main charge in a mine by the shock of a nearby explosion of another mine or independent explosive charge. The explosion of the main charge may be caused either by sympathetic detonation or through the explosive train and/or firing mechanism of the mine.

Thesaurus

Noun	1.	countermine - (military) a tunnel dug to defeat similar activities by the enemy countermeasure - an action taken to offset another action armed forces, armed services, military, military machine, war machine - the military forces of a nation; "their military is the largest in the region"; "the military machine is the same one we faced in 1991 but now it is weaker"
Verb	1.	countermine - destroy property or hinder normal operations; "The Resistance sabotaged railroad operations during the war" sabotage, undermine, weaken, subvert, counteract derail - cause to run off the tracks; "they had planned to derail the trains that carried atomic waste" disobey - refuse to go along with; refuse to follow; be disobedient; "He disobeyed his supervisor and was fired"
	2.	countermine - destroy enemy mines with one's own mines; "We countermined the banks of the river" mine - lay mines; "The Vietnamese mined Cambodia"