1a shaped tool or die for giving a desired form to metal by hammering or pressure.
2a groove, ridge, or other moulding on an object.
shape (metal) using a swage, especially in order to reduce its cross section: (as noun swaging)the instrument has a swaging head and a pulsed action which flattens the rivet in a series of rolling motions
join (metal pieces) together by using a swage:eye-ends in corrosion-resisting steel swaged on aircraft control cables
late Middle English(in sense 2 of the noun): from Old French souage 'decorative groove', of unknown origin