D defs.my
Entry 1 sense Webster, 1913

bump off

/bŭmp ôf/ · bump· off · IPA
01 v. t. To kill (a person); to murder; -- used commonly of planned assassination by criminals; as, the mob bumped off all the witnesses.
  1. 1.
    To kill (a person); to murder; -- used commonly of planned assassination by criminals; as, the mob bumped off all the witnesses.[Colloq.]