pincer

noun
  1. one of a pair of curved claws of a crab, lobster, or similar crustacean
  2. a tool with two hinged arms and blunt concave jaws for gripping and pulling things
  3. Usage: usually plural: pincers
  4. a military movement in which forces attack both flanks of an enemy formation simultaneously
  5. Usage: military; usually in ‘pincer movement’ or ‘pincer attack’

Examples