5 letters · 7 points in Scrabble
noun the iridescent internal layer of a mollusk shell
originBorrowed from Middle French nacre, from Medieval Latin nacchara, ultimately derived from Arabic نَقَّارَة (naqqāra). Doublet of nagara, nagada, and naqareh. Also present in nacarat.
Etymology from Wiktionary, CC BY-SA 3.0