1. an external angle of a wall or building
Usage: architecture
2. a stone or brick used to form such an angle
Usage: architecture
3. a wedge-shaped piece used to secure or adjust something
Usage: technical

Examples

• The mason carefully placed each quoin to ensure the building’s corners were perfectly aligned.
• The historic church featured decorative quoins made of contrasting limestone.
• Workers used wooden quoins to level the printing press.
• The architect specified that the quoins should be cut from local granite.
• Each quoin was numbered to ensure proper assembly of the corner.
• The restoration team replaced several damaged quoins on the castle’s exterior.