A sharp edge or ridge formed by the intersection of two curved surfaces
A ridge formed on the surface of flaked stone, such as a arrowhead or hand axe, as the result of the intersection of two or more flake removals.
A sharp edge or ridge formed by the intersection of two surfaces
Buttocks, arse.
A convex line or surface.
The state of being convex.
A measure of the curvature in the relationship between the prices and yields of bonds.