Noun

• S: (n) hammer, cock (the part of a gunlock that strikes the percussion cap when the trigger is pulled)
• S: (n) hammer (a hand tool with a heavy rigid head and a handle; used to deliver an impulsive force by striking)
• S: (n) malleus, hammer (the ossicle attached to the eardrum)
• S: (n) mallet, hammer (a light drumstick with a rounded head that is used to strike such percussion instruments as chimes, kettledrums, marimbas, glockenspiels, etc.)
• S: (n) hammer (a heavy metal sphere attached to a flexible wire; used in the hammer throw)
• S: (n) hammer (a striker that is covered in felt and that causes the piano strings to vibrate)
• S: (n) hammer, power hammer (a power tool for drilling rocks)
• S: (n) hammer, pound, hammering, pounding (the act of pounding (delivering repeated heavy blows)) "the sudden hammer of fists caught him off guard"; "the pounding of feet on the hallway"

Verb

• S: (v) hammer (beat with or as if with a hammer) "hammer the metal flat"
• S: (v) forge, hammer (create by hammering) "hammer the silver into a bowl"; "forge a pair of tongues"