Har′dy.
(Forging.) A chisel or fuller having a square shank for insertion into a square hole in an anvil called a hardy-hole. The hardy-hole is sometimes occupied by a smaller anvil, fullering-tool, or calking-swage, as in the illustration, in which in a steel-faced plate is sunk a vertical groove, and the faces on each side of the groove are inclined, so as to give the proper taper to the inner sides of the calk when the horseshoe is placed within the groove.