One edge was rough and jagged, but from that edge, the stone had been worked into a smooth, clean semicircular curve, its edges trimmed in a simple bevel.
-- John Saul, Hellfire, 2010
Gives them a sort of three-D effect. The plus-one must be the width of the bevel.
-- Ellen Ullman, The Bug, 2003
The origin of bevel, which entered English in the 1500s, is uncertain, though it could possibly come from the Old French term biaiser meaning "to slope" or "to make slanting." It is unclear which came first: the adjective or the noun form.