countermine

(ko̵untər mīn′; for v., also ko̵unt′ər mīn)

noun

  1. a military mine for intercepting or destroying an enemy mine
  2. counterplot

Origin: ME countremine: see counter- & mine

intransitive verb, transitive verb countermined, countermining

  1. to intercept (an enemy mine) with a countermine
  2. counterplot

See countermine in American Heritage Dictionary 4

verb coun·ter·mined, coun·ter·min·ing, coun·ter·mines
verb, transitive
  1. To frustrate or defeat by secret and opposite measures.
  2. To make or use a countermine against.
verb, intransitive
To make or lay down countermines.
noun (kounˈtər-mīnˌ)
  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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