/ˈkwɔɪn/ (KWOYN)

Definitions

1. noun

A stone or brick, typically carved, used as a decorative feature at the corner of a building, or a supporting piece of stone at the corner of a wall.

“The architect designed the quoin to blend in with the surrounding stonework.”

2. noun

A block of stone or metal used to secure the corner of a printed page or a book.

“The book’s binding was weakened by a loose quoin.”