[koin, kwoin]


verb (used with object)

to provide with quoins, as a corner of a wall.
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. 2019

Related Words for quoin

wedge, angle, cornerstone

Examples from the Web for quoin

Historical Examples of quoin

British Dictionary definitions for quoin


coign or coigne


an external corner of a wall
Also called: cornerstone a stone forming the external corner of a wall
another name for keystone (def. 1)
printing a metal or wooden wedge or an expanding mechanical device used to lock type up in a chase
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 quoin

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