| 单词 | quoin | 
| 释义 | Word Frequency quoin(kwɔɪn, kɔɪn), coign or coigne (kɔɪn) noun 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 (sense 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 originC16: variant of coin (corner) | 
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