A sexual partner, especially a woman, to whom one is not or cannot be married.
A slave-girl or woman, kept for instance in a harem, who is held for sexual service.
A woman who lives with a man, but who is not a wife.
The younger recipient (usually female or a bottom) of interest from a sugar daddy or sugar mama, especially financial and romantic in an intergenerational relationship
A term of endearment; sweetheart.