coign(redirected from coigns of vantage)
Also found in: Dictionary, Thesaurus, Idioms.
quoin, coign, coigne
1. an external corner of a wall
2. a stone forming the external corner of a wall
3. another name for keystone
quoin, coign, coin
In masonry, a hard stone or brick used, with similar ones, to reinforce an external corner or edge of a wall or the like; often distinguished decoratively from adjacent masonry; may be imitated in non-load-bearing materials. Occasionally imitated, for decorative purposes, by wood that has been finished to look like masonry.