n. One who discharged a gun of the catapult kind. See gun, n.n. One skilled in the use of guns or cannon; one who works a gun, either on land or at sea; a cannoneer.n. A warrant-officer in the navy appointed to take charge of all the ordnance, ordnance-stores, and ammunition on board ship.n. One who uses firearms; especially, one who practises the art of shooting game.n. The loon or great northern diver.n. The sea-bream, Pagellus centrodontus. —