Word Of The Week -- nacre
Definition:
na·cre (nā'k&r)
n.A hard, iridescent substance that forms the inner layer of certain mollusk shells, used for making buttons, beads, etc. Also called mother of pearl.
Etymology: [French: from Old French nacle, from Old Italian naccaro, drum, nacre, from Arabic naqqāra, small drum, from naqara, to bore, pierce;
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