Definition of: countermine

(koun′tər·mīn′) v.t. & v.i. ·mined, ·min·ing
1. To mine counter to (an enemy); hence, to baffle or obstruct by secret means.
2. To sow (an area) with mines in order to detonate enemy mines.
—noun (koun′·tər·mīn′)
1. A mine or system of galleries run out to meet and destroy similar works of an enemy.
2. Hence, any stratagem to foil the designs of an opponent.
3. An underwater mine intended to detonate enemy mines.