D defs.my
Entry 2 senses Webster, 1913

Killer

/kĭl'-ẽr/ · Kill·er · IPA /ˈkɪlɚ/
01 n. One who deprives of life; one who, or that which, kills.
  1. 1.
    One who deprives of life; one who, or that which, kills.
  2. 2.
    A voracious, toothed whale of the genus Orca, of which several species are known; called also killer whale.(Zool.) Also: killer whale