Coigne

(koin), n. [See QUOIN.] 1. A corner or external angle; a jutting point, as of a wall; a corner-stone. See you yon coigne of the capital? yon corner-stone? Shak. 2. A wedge for raising, fastening, or leveling any thing, as a piece of ordnance or a printer’s form. [Written also coin and quoin.]