A hand tool consisting of a handle with a head of metal or other heavy rigid material that is attached at a right angle, used for striking or pounding, The part of a gunlock that hits the primer or firing pin or explodes the percussion cap and causes the gun to fire, A part of an apparatus that strikes a gong or bell, as in a clock, intransitive verb_ To put together, fasten, or seal, particularly with nails, by hammering,