mother-of-pearl
n. Smooth iridescent substance forming the inner layer of the shell of oysters etc.
n. The hard pearly internal layer of several kinds of shells, esp. of pearl oysters, river mussels, and the abalone shells; nacre. See Pearl.
n. Smooth iridescent substance forming the inner layer of the shell of oysters etc.
n. The hard pearly internal layer of several kinds of shells, esp. of pearl oysters, river mussels, and the abalone shells; nacre. See Pearl.