Noun: coign koyn
- The keystone of an arch
"The coign was carefully placed to complete the archway";
- quoin, coigne
- Expandable metal or wooden wedge used by printers to lock up a form within a chase
"The printer adjusted the coign to secure the type in place";
- quoin, coigne
Sounds like: coin, quoin, coigne
Derived forms: coigns
Type of: headstone, key, keystone, wedge
Encyclopedia: Coign