concubine means A sexual partner, especially a woman, to whom one is not or cannot be married.
concubine is pronounced /ˈkɑŋkjəbaɪn/.
Etymology
From 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.
noun
- A sexual partner, especially a woman, to whom one is not or cannot be married.
- A woman who lives with a man, but who is not a wife.“And that is more than I will yield unto: / I know I am too mean to be your queen, / And yet too good to be your concubine.”
- A slave-girl or woman, kept for instance in a harem, who is held for sexual service.“He ſhall be made a chaſte and luſtleſſe Eunuch,
And in my Sarell tend my Concubines:”