su·per·cil·i·ary I. \ˌsüpə(r)ˈsilēˌerē\adjective Etymology: irregular (influenced by ary) from New Latin superciliaris, from Latin supercilium eyebrow + -aris -ar 1.: of, relating to, or adjoining the eyebrow : supraorbital < a superciliary line of color on a bird > 2.: supraciliary II. noun (-es) : a superciliary part or marking