[brow] n [ME, fr. OE bru; akin to ON brun eyebrow, Gk ophrys, Skt bhru] (bef. 12c) 1 a: eyebrow b: forehead
2: the projecting upper part or margin of a steep place
3: expression, mien
[2]brow n [perh. fr. Dan or Sw bro bridge; akin to OE brycg bridge] (1867): gangplank