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.

A straight tool with file teeth, made of steel, to be pressed through irregular holes in metal that cannot be dressed by revolving tools; a drift.

A broad chisel for stonecutting.

To shape roughly, as a block of stone, by chiseling with a coarse tool.

To enlarge or dress (a hole), by using a broach.

A cutting tool in various shapes, equipped with a series of cutting teeth.

A long, tapered cutting tool with serration's which, when forced through a hole or across a surface, cuts a desired shape or size.

A tapered tool used to shape an internal profile by making a linear cutting motion through a work piece. The image below shows a male broaching tool in the background with the work piece that was broached in the foreground.

a tapered steel wire, round in cross section, into which cuts have been made in the working end

To drill or cut out material left between closely spaced drill holes. Also, a mason's sharp pointed chisel for dressing stone.

(n.) 1. A tool used to cut the keyway into the cylinder plug. (v.) 2. To cut the keyway into a cylinder plug with a broach. Source: Lock Industry Standards and Training (LIST) Council

1.In quarrying, to free stone blocks from the ledge by cutting out the webbing between holes drilled close together in a row. 2. To finish a stone surface with broad parallel groves. A general term describing machine- worked stone finishes. Some broached work has a shallow drafted margin surrounding the broaching

A broach is a series of progressively taller chisel points mounted on a single piece of steel, typically used to enlarge a circular hole into a larger noncircular shape such as a square or other desired shape.