9 letters · 15 points in Scrabble
noun a woman who cohabits with an important man
originFrom Middle English concubine (first attested 1250–1300), from Anglo-Norman concubine, from Latin concubīna, equivalent to concub- (variant stem of concumbō (“to lie together”)) + feminine suffix -īna.
Etymology from Wiktionary, CC BY-SA 3.0