| Word | Definitions | Synonyms |
|---|---|---|
| quoin | (noun) (architecture) solid exterior angle of a building; especially one formed by a cornerstone | Synonyms: corner |
| (noun) the keystone of an arch | Synonyms: coign, coigne | |
| (noun) expandable metal or wooden wedge used by printers to lock up a form within a chase | Synonyms: coign, coigne |