mistress

Definition of mistress in English English dictionary: Used as the title of a married woman before her name. Now used only in the abbreviated form Mrs
1855 – 1857: The sound of Mistress Affery cautiously chaining the door before she opened it, caused them both to look that way. — Little Dorrit, Charles Dickens, Book 2, Chapter 10.; a female partner in an extramarital relationship, generally including sexual relations; a female teacher
games mistress.; a dominatrix; a woman, specifically one with control, authority or ownership
She was the mistress of the mansion, and owned the horses.; {n} a woman who governs, a concubin; for a married, and Miss, for an unmarried, woman; A title of courtesy formerly prefixed to the name of a woman, married or unmarried, but now superseded by the contracted forms, Mrs; {i} lady of the house; housekeeper; teacher; woman; concubine, female lover; a woman who (dishonorably) displaces a wife in the affections of a man; a woman, other than his wife, with whom a married man has a continuing sexual relationship; a woman master who directs the work of others; a woman schoolteacher (especially one regarded as strict); a woman master who directs the work of others an adulterous woman; a woman who has an ongoing extramarital sexual relationship with a man; A dog's mistress is the woman or girl who owns it. The huge wolfhound danced in circles around his mistress; A woman having power, authority, or ownership; a woman who exercises authority, is chief, etc; A married man's mistress is a woman who is not his wife and with whom he is having a sexual relationship. She was his mistress for three years; The old name of the jack at bowls; A woman regarded with love and devotion; she who has command over one's heart; a beloved object; a sweetheart; To wait upon a mistress; to be courting; an adulterous woman; a woman who has an ongoing extramarital sexual relationship with a man; A married woman; a wife; A woman filling the place, but without the rights, of a wife; a concubine; a loose woman with whom one consorts habitually; the female head of a family, a school, etc; A woman well skilled in anything, or having the mastery over it; maistress; mastress
mistress of the house: woman in charge of a household
mistress of the seas: Britain
baller mistress: a woman who directs and teaches and rehearses dancers for a ballet company
choir mistress: {i} female conductor of a church choir
mistresses: plural of mistress
toast mistress: a woman toastmaster
wardrobe mistress: {i} woman who is responsible for the costumes on a movie set or in a theater