bevel

Concise Oxford English Dictionary © 2008 Oxford University Press:
bevel /ˈbɛv(ə)l/

▶noun

• 1 (in carpentry) a surface or edge which slopes away from a horizontal or vertical surface.

• 2 (also bevel square) a tool for marking angles in carpentry and stonework.

▶verb (bevels, bevelling, bevelled; US bevels, beveling, beveled) (usu. as adj. bevelled) cut a bevel on.

– origin C16: from an OFr. dimin. of baif ‘open-mouthed’, from baer (see bay3).