FROM STRONG’S GREEK DICTIONARY (1890)

Strong’s Greek Dictionary (1890) — public domain, printed whole.

ophrus ὀφρῦς — of-roos' — perhaps from 3700 (through the idea of the shading or proximity to the organ of vision); the eye-"brow" or forehead, i.e. (figuratively) the brink of a precipice:--brow.

see GREEK for 3700