v. 1 tr. a take weapons away from (a person, State, etc.) (often foll. by of : were disarmed of their rifles). b Fencing etc. deprive of a weapon. 2 tr. deprive (a ship etc.) of its means of defence. 3 intr. (of a State etc.) disband or reduce its armed forces. 4 tr. remove the fuse from (a bomb etc.). 5 tr. deprive of the power to injure. 6 tr. pacify or allay the hostility or suspicions of; mollify; placate. disarmer n. disarming adj. (esp. in sense 6). disarmingly adv.
[ ME f. OF desarmer (as DIS-, ARM(2)) ]