bit key
A key having a projecting blade or wing which engages with and actuates the bolt and tumblers of a lock.
A metal piece temporarily fixed to a bit to prevent drilling too deeply in a blind hole.
A wood joint formed by a cut into the end of a timber to fit over a cross timber; for
1. A notch cut across the grain at one end of a timber for its reception on the edge of
Wood of the sugar maple tree, cut so as to produce a wavy grain with numerous small, decorative, circular markings.