Coun"ter*mine` (koun"t&etilde;r*mīn`), n. [Counter- + mine underground gallery: cf. F. contermine.] 1. (Mil.) An underground gallery excavated to intercept and destroy the mining of an enemy.

2. A stratagem or plot by which another sratagem or project is defeated.

Thinking himself contemned, knowing no countermine against contempt but terror.
Sir P. Sidney.

Coun`ter*mine" (koun`t&etilde;r*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.

Coun`ter*mine", v. i. To make a countermine or counterplot; to plot secretly.

'Tis hard for man to countermine with God.
Chapman.