1a. An exterior angle of a wall or other piece of masonry. b. Any of the stones used in forming such an angle, often being of large size and dressed or arranged so as to form a decorative contrast with the adjoining walls. 2. A keystone. 3.Printing A wedge-shaped block used to lock type in a chase. 4. A wedge used to raise the level of a gun.
TRANSITIVE VERB:
Inflected forms: quoined also coigned, quoin·ing, coign·ing, quoins, coigns To provide, secure, or raise with a quoin or quoins.
koin, kwoin
