Bouchon
A hard brass tubing sometimes inserted in watch and clock plates to form pivot holes, and known in America as bushing wire. See Bushing. BOW. A device now obsolete, which consisted of a strip of whale-bone, to both ends of which a cord or gut was attached, and which was used to rotate a drill or mandril, before the introduction of watchmakers lathes. The ring of a watch case, by which it is attached to the chain. See also Pendant Bow