n. [ F., cf. Sp. nácara, nácar, It. nacchera, naccaro, LL. nacara, nacrum; of Oriental origin, cf. Ar. nakīr hollowed. ] (Zool.) A pearly substance which lines the interior of many shells, and is most perfect in the mother-of-pearl.
‖a. [ F. See Nacre. ] (Art) Having the peculiar iridescence of nacre, or mother-of-pearl, or an iridescence resembling it;
a. [ See Nacre. ] (Zool.) Consisting of, or resembling, nacre; pearly. [ 1913 Webster ]