bev·el 
(bĕvəl)
(bĕvəl)n.
1. The angle or inclination of a line or surface that meets another at any angle but 90°.
2. Two rules joined together as adjustable arms used to measure or draw angles of any size or to fix a surface at an angle. Also called bevel square.
v. bev·eled, bev·el·ing, bev·els or bev·elled or bev·el·ling
v.tr.
To cut at an inclination that forms an angle other than a right angle: beveled the edges of the table.
v.intr.
To be inclined; slant.
[From Middle French *bevel, bevel square (source of Modern French biveau), from Old French *baivel, from diminutive of baif, open-mouthed, from baer, to gape, from Vulgar Latin *batāre, to yawn, gape; see BAY2.]