A cant in architecture is an angled (oblique-angled) line or surface that cuts off a corner.[1][2] Something with a cant is canted.
Canted facades are a typical of, but not exclusive to, Baroque architecture. The angle breaking the facade is less than a right angle, thus enabling a canted facade to be viewed as, and remain, one composition. Bay windows frequently have canted sides.[2]
A cant is sometimes synonymous with chamfer and bevel.[3]
chamfer: 1. A bevel or cant, such as a small splay at the external angle of a masonry wall