bump stock

[ buhmp stok ]
/ ˈbʌmp ˌstɒk /


a replacement gunstock that enables a semiautomatic rifle to discharge bullets at a much higher rate of fire, nearly that of a fully automatic machine gun.

Nearby words

  1. bummer,
  2. bump,
  3. bump into,
  4. bump off,
  5. bump start,
  6. bump up,
  7. bumper,
  8. bumper car,
  9. bumper guard,
  10. bumper jack

Origin of bump stock

First recorded in 2005–10; short for bump fire (from its use of the recoil to bump the trigger against the trigger finger) + (gun)stock

Also called bump-fire stock [buhmp-fahyer stok] /ˈbʌmpˌfaɪər ˌstɒk/.

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019