HAM'MER, n. An instrument for driving nails, beating metals, and the like. It consists of an iron head, fixed crosswise to a handle. Hammers are of various sizes; a large hammer used by smiths is called a sledge.
HAM'MER, v.t. To beat with a hammer; as, to hammer iron or steel.
HAM'MER, v.i. To work; to be busy; to labor in contrivance.