mistress

mis tress |ˈmistris|     noun   1 a woman in a position of authority or control // : she is always //mistress of// the situation, coolly self-possessed.//   • a woman who is skilled in a particular subject or activity // : a //mistress of// the sound bite, she is famed for the acidity of her tongue.// • the female owner of a dog, cat, or other domesticated animal. • [with adj. ] chiefly Brit. a female schoolteacher who teaches a particular subject // : a Geography mistress.// • archaic a female head of a household // : he asked for the mistress of the house.//