1. (n.) The killing of one human being by another.

2. (n.) One who kills another; a manslayer.

Cain aborticide apache assassin assassination assassinator blood bloodletter bloodshedder bloody murder bravo bumping-off burker butcher button man cannibal cutthroat desperado elimination eradicator executioner exterminator foul play fratricide fungicide garroter genocide germicide gorilla gun gunman gunsel hatchet man head-hunter herbicide hit man homicidal maniac infanticide insecticide killer killing liquidation man-eater man-killer manslaughter manslayer massacrer matador matricide microbicide murder murderer parricide patricide pesticide poison poisoner purge purging regicide removal rodenticide slaughterer slayer sororicide strangler suicide thug thuggee thuggery thuggism torpedo trigger man uxoricide vermicide