1. (n.) The prominent ridge over the eye, with the hair that covers it, forming an arch above the orbit.

2. (n.) The hair that covers the brow (ridge over the eyes); the eyebrow.

3. (n.) The forehead; as, a feverish brow.

4. (n.) The general air of the countenance.

5. (n.) The edge or projecting upper part of a steep place; as, the brow of a precipice; the brow of a hill.

6. (v. t.) To bound to limit; to be at, or form, the edge of.