A quoined corner refers to a corner in masonry construction where the bricks or stones are arranged in a pattern to emphasize the corner and provide additional strength and visual interest.

Typically, quoins are larger or more prominently shaped stones or bricks that are alternated with regular bricks or stones at the corners of a building. This creates a distinct and often decorative effect, highlighting the edges of the structure.

Quoined corners are commonly found in various architectural styles, including traditional masonry buildings, where they serve both structural and aesthetic purposes, adding character and stability to the building's corners.