/brow/ , n.
1. Anat. the ridge over the eye.
2. the hair growing on that ridge; eyebrow.
3. the forehead: He wore his hat low over his brow.
4. a person's countenance or mien.
5. the edge of a steep place: She looked down over the brow of the hill.
6. gangplank.
[ bef. 1000; ME browe, OE bru; akin to ON brun, Skt bhrus ]