n. - The prominent ridge over the eye, with the hair that covers it, forming an arch above the orbit.
n. - The hair that covers the brow (ridge over the eyes); the eyebrow.
n. - The forehead; as, a feverish brow.
n. - The general air of the countenance.
n. - The edge or projecting upper part of a steep place; as, the brow of a precipice; the brow of a hill.
v. t. - To bound to limit; to be at, or form, the edge of.