Entry 4 senses · 2 variants Webster, 1913 Slaughter /slôt'-ẽr/ · Slaugh·ter · IPA /ˈslɔtɚ/ n. v. t. 01 n. The act of killing. 1. The act of killing. “On war and mutual slaughter bent.” — Milton. 2. The act of killing cattle or other beasts for market. Syn. Carnage; massacre; butchery; murder; havoc. 02 v. t. To visit with great destruction of life; to kill; to slay in battle. imp. & p. p. Slaughtered; p. pr. & vb. n. Slaughtering 1. To visit with great destruction of life; to kill; to slay in battle. “Your castle is surprised; your wife and babes Savagely slaughtered.” — Shak. 2. To butcher; to kill for the market, as beasts.