Dictionary entry

Countermine (2)

Webster's Dictionary 1913

Coun′ter‐mine″ (koun′tẽr‐mīn″), v. t. [Cf. F. contreminer.] [imp. & p. p.Countermined; p. pr. & vb. n.Countermining.] 1. (Mil.) To oppose by means of a countermine; to intercept with a countermine.

2. To frustrate or counteract by secret measures.