quoin
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quoin
, coign, coigne1. an external corner of a wall
2. a stone forming the external corner of a wall
3. another name for keystone
Collins Discovery Encyclopedia, 1st edition © HarperCollins Publishers 2005
Quoin
One of a series of stones or bricks used to mark or visually reinforce the exterior corners of a building; often through a contrast of size, shape, color or material, which may be imitated in non-load-bearing materials.





rustic quoin
A stone quoin, projecting out from the main surface of the wall with rough, split faces and chamfered edges, to give the appearance of rugged strength.
Illustrated Dictionary of Architecture Copyright © 2012, 2002, 1998 by The McGraw-Hill Companies, Inc. All rights reserved
quoin
[kȯin] (building construction)
One of the members forming an outside corner or exterior angle of a building, and differentiated from the wall by color, texture, size, or projection.
(graphic arts)
An expandable device used to secure type and printing plates in a chase.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
coin, quoin
1.The corner of a building.
2. The stones or bricks which form the corner.
3. A wedge.
quoin, coign, coin

stone quoins set in brickwork
McGraw-Hill Dictionary of Architecture and Construction. Copyright © 2003 by McGraw-Hill Companies, Inc.