ETYM Old Eng. hamer, as. hamer, hamor; akin to Dutch hamer, German and Dan. hammer, Swed. hammare, Icel. hamarr, hammer, crag, and perh. to Greek akmon anvil, Skr. açman stone.
1. A hand tool with a heavy rigid head and a handle; used to deliver an impulsive force by striking.
2. The act of pounding (delivering repeated heavy blows); SYN. pound, hammering, pounding.
3. The part of a gunlock that strikes the percussion cap when the trigger is pulled.
4. The felt-covered striker that causes the piano strings to vibrate.
5. A power tool for drilling rocks; SYN. power hammer.
6. An athletic competition in which a heavy metal ball that is attached to a flexible wire is hurled as far as possible; SYN. hammer throw.
7. A heavy metal sphere attached to a flexible wire; used in the hammer throw.
In track and field athletics, a throwing event in which only men compete. The hammer is a spherical weight attached to a chain with a handle. The competitor spins the hammer over his head to gain momentum, within the confines of a circle, and throws it as far as he can. The hammer weighs 7.26 kg/16 lb and may originally have been a blacksmith's hammer.