| mother-of-pearl. |

| moth·er-of-pearl (mŭth'ər-əv-pûrl') n. The pearly internal layer of certain mollusk shells, used to make decorative objects. Also called nacre. moth'er-of-pearl' adj. |
na·cre (nā'kər) n. See mother-of-pearl. [French, from Old French nacle, from Old Italian naccaro, drum, nacre, from Arabic naqqāra, small drum, from naqara, to bore, pierce; see nqr in Semitic roots.] na'cred (-kərd), na'cre·ous (-krē-əs) adj. |