Archit. the edge made by two straight or curved surfaces coming together at an angle, as in a molding
Origin of arrisOld French areste: see arête
nounpl. arris or ar·ris·es
The sharp edge or ridge formed by two surfaces meeting at an angle, as in a molding.
Origin of arrisAlteration of Old French areste, fishbone, spine; see arête.
- A sharp edge or ridge formed by the intersection of two surfaces
- (architecture) A sharp edge or ridge formed by the intersection of two curved surfaces
- (archaeology) A ridge formed on the surface of flaked stone that results from the intersection of two or more flake removals. The arris marks the location of flake scars on the dorsal surface of chipped stone.
- (UK, slang) Buttocks, arse.