A mistress.
The mistress of a Mafioso.
The mistress of a household.
A woman who runs a brothel, particularly one that specializes in finding prostitutes for rich and important clients.
A polite form of address for a woman or lady.
A conceited or quarrelsome girl.
An irritable, conceited, or contemptous woman. (used as a general term of abuse).
To address as "madam".