‖n. [ L. ] (Zool.) The eyebrow, or the region of the eyebrows. [ 1913 Webster ]
a. [ L. superciliosus, fr. supercilium an eyebrow, pride; super over, + cilium an eyelid; probably akin to celare to conceal. Cf. Conceal. ] Lofty with pride; haughty; dictatorial; overbearing; arrogant;