n. (pl. knives) 1 metal blade for cutting or as a weapon, with usu. one long sharp edge fixed in a handle. 2 cuttingblade in a machine. 3 (as the knife) surgical operation. v. (fing) cut or stab with a knife. at knifepoint threatened with a knife or an ultimatum etc. get (or have got) one’s knife into treat maliciously, persecute. [Old English]
