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Noun: countermine  'kawn-tu(r),mIn
  1. (military) a tunnel dug to defeat similar activities by the enemy
Verb: countermine  'kawn-tu(r),mIn
  1. Destroy property or hinder normal operations
    "The Resistance countermined railway operations during the war";
    - sabotage, undermine, counteract, subvert, weaken
     
  2. Destroy enemy mines with one's own mines
    "We countermined the banks of the river"

Derived forms: countermining, countermines, countermined

Type of: countermeasure, disobey, mine

Encyclopedia: Countermine