(1):

(n.) A tool, variously shaped or grooved on the end or face, used by blacksmiths and other workers in metals, for shaping their work, whether sheet metal or forging, by holding the swage upon the work, or the work upon the swage, and striking with a sledge.

(2):

(v. t. & i.) See Assuage.

(3):

(v. t.) To shape by means of a swage; to fashion, as a piece of iron, by forcing it into a groove or mold having the required shape.