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.

acme air apex apogee bank bean bearing board border bordure brim brink cap carriage cast cast of countenance cilia climax cloud nine coast color complexion countenance crest crown culmen culmination demeanor dome edge extreme limit extremity face facial appearance favor featheredge feature features flange forehead frame fringe front garb guise head headpiece heaven heavens height hem high noon highest pitch highest point labellum labium labrum ledge limb limbus limit lineaments lines lip list looks marge margin maximum meridian mien mountaintop ne plus ultra no place higher noddle noggin noodle noon pate peak physiognomy pinnacle pitch point pole poll port posture presence ragged edge ridge rim sconce selvage seventh heaven shore side sideline skirt sky spire stance summit tip tip-top top traits turn upmost upper extremity uppermost utmost verge vertex very top visage zenith