1. Expandable metal or wooden wedge used by printers to lock up a form within a chase; SYN. coign, coigne.
2. The keystone of an arch; SYN. coign, coigne.
a wedge; salient angle of a building; cornerstone.
angle; wedge; cornerstone.
1. To equip (a type form) with quoins
2. To provide with quoins