BROACH n. 2 definitions
A tool of steel, generally tapering, and of a polygonal form, with from four to eight cutting edges, for smoothing or enlarging holes in metal; sometimes made smooth or without edges, as for burnishing pivot holes in watches; a reamer. The broach for gun barrels is commonly square and without taper.…
BURNISH v.
ing with something hard and smooth; as, to burnish brass or paper. The frame of burnished steel, that east a glare From far, and seemed to thaw the freezing air. Dryden. Now the village windows blaze, Burnished by the setting sun. Cunningham. Burnishing machine, a machine for smoothing and polishing by compression, as…
BUTT; BUT n.
.), a butt joint, made by welding together the flat ends, or edges, of a piece of iron or steel, or of separate pieces, without having them overlap. See Weld. -- Full butt, headfirst with full force. [Colloq.] "The corporal . . . ran full butt at the lieutenant." Marryat.