[koin, kwoin]
  1. an external solid angle of a wall or the like.
  2. one of the stones forming it; cornerstone.
  3. any of various bricks of standard shape for forming corners of brick walls or the like.
  4. a wedge-shaped piece of wood, stone, or other material, used for any of various purposes.
  5. Printing. a wedge of wood or metal for securing type in a chase.
verb (used with object)
  1. to provide with quoins, as a corner of a wall.
  2. to secure or raise with a quoin or wedge.
Also coign, coigne.

Origin of quoin

First recorded in 1525–35; variant of coin
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

Related Words for quoins

wedge, angle, cornerstone

Examples from the Web for quoins

Historical Examples of quoins

British Dictionary definitions for quoins


coign or coigne

  1. an external corner of a wall
  2. Also called: cornerstone a stone forming the external corner of a wall
  3. another name for keystone (def. 1)
  4. printing a metal or wooden wedge or an expanding mechanical device used to lock type up in a chase
  5. a wedge used for any of various other purposes, such as (formerly) to adjust elevation in muzzle-loading cannon

Word Origin for quoin

C16: variant of coin (corner)
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Word Origin and History for quoins



1530s, "a cornerstone," variant spelling of coin (n.); in early use also in other senses of that word, including "a wedge."

Online Etymology Dictionary, © 2010 Douglas Harper