Pronunciation: (wep'un),[key] —n. 1. any instrument or device for use in attack or defense in combat, fighting, or war, as a sword, rifle, or cannon.
2. anything used against an opponent, adversary, or victim: the deadly weapon of satire. 3. Zool.any part or organ serving for attack or defense, as claws, horns, teeth, or stings.
—v.t. to supply or equip with a weapon or weapons: to weapon aircraft with heat-seeking missiles.