Definition & Meaning of "quoin"

What is a "quoin"?

A quoin is a structural element found at the corner of a building or wall, typically made of stone or brick. Quoins are often larger or more decorative than the surrounding materials, serving both functional and aesthetic purposes. They help strengthen the corners of a building, providing stability and support. In addition to their structural role, quoins can enhance the visual appeal of a structure by creating a sense of depth and texture. They are commonly used in classical and traditional architecture, where they can be seen in various styles and finishes.