quoin

名词 quoin:

1. expandable metal or wooden wedge used by printers to lock up a form within a chase
   同义词：coign, coigne
2. the keystone of an arch
   同义词：coign, coigne
3. (architecture) solid exterior angle of a building; especially one formed by a cornerstone
   同义词：corner

quoin 也作 coign

n.（名词）

An exterior angle of a wall or other piece of masonry.
隅角：墙或其它砖石建筑物的外角
A stone serving to form such an angle; a cornerstone.
隅角石：用来建隅角的石材；隅石
A keystone.
拱顶石
Printing A wedge-shaped block used to lock type in a chase.
【印刷术】 版楔：用来将铅字锁固在活版架中的楔形块
A wedge used to raise the level of a gun.
用来提高枪炮高度的楔形物
v.tr.（及物动词）
quoined 也作 coigned quoin.ing coign.ing quoins coigns
To provide, secure, or raise with a quoin or quoins.
以楔子固定或提高

来源：
Variant of coin
coin的变体