sword. n. 1. A weapon consisting typically of a long, straight or slightly curved, pointed blade having one or two cutting edges and set into a hilt. 2.aft, helve-the handle of a weapon or tool. hilt-the handle of a sword or dagger. rapier, tuck-a straight sword with a narrow blade and two edges. weapon, weapon system, arm-any instrument or instrumentality used in fighting or hunting; he was licensed to carry a weapon.