BEV'EL, n. Among masons, carpenters,joiners, etc., an instrument, or kind of square, one leg of which is frequently crooked, according to the sweep of an arch or vault. It is movable on a point or center, and so may be set to any angle. An angle that is not square is called a bevel angle, whether obtuse or acute. 1. A curve or inclination of a surface from a right line; as, the proper bevel of a piece of timber. BEV'EL, a. Crooked; awry; oblique. BEV'EL, v.t. To cut a bevel angle. BEV'EL, v.i. To curve; to incline towards a point, or from a direct line.