Hammer

An instrument for driving nails, beating metals, and the like, consisting of a head, usually of steel or iron, fixed crosswise to a handle.

Something which in firm or action resembles the common hammer

That part of a clock which strikes upon the bell to indicate the hour.

The padded mallet of a piano, which strikes the wires, to produce the tones.

The malleus.

That part of a gunlock which strikes the percussion cap, or firing pin; the cock; formerly, however, a piece of steel covering the pan of a flintlock musket and struck by the flint of the cock to ignite the priming.

Also, a person of thing that smites or shatters; as, St. Augustine was the hammer of heresies.

To beat with a hammer; to beat with heavy blows; as, to hammer iron.

To form or forge with a hammer; to shape by beating.

To form in the mind; to shape by hard intellectual labor; -- usually with out.

To be busy forming anything; to labor hard as if shaping something with a hammer.

To strike repeated blows, literally or figuratively.

a power tool for drilling rocks