n. The brow, or prominence of parts, over the eye; a prominent superorbital formation; a superciliary ridge or shield.n. A fringe of hairs growing on the brow of the eye; the supercilia. See cut under eye.n. In ornithology, a superciliary streak of color.n. In architecture, a molding over a window; a window-cap: in American usage, a light dormer without vertical sides sot in a roof.