- a mine intended to intercept or destroy an enemy mine.
- a counterplot.
- to oppose by a countermine.
- to make a countermine.
- to intercept or destroy enemy mines.
- a tunnel dug to defeat similar activities by an enemy
- a plot to frustrate another plot
- to frustrate by countermeasures
- to take measures to defeat the underground operations of (an enemy)
- to destroy enemy mines in (an area) with mines of one's own