D defs.my
Entry 8 senses · 2 variants Webster, 1913

Mistress

/mĭs'-trəs/ · Mis·tress · IPA /ˈmɪs.tɹᵻs/
01 n. A woman having power, authority, or ownership; a woman who exercises authority, is chief, etc.; the female head of a family, a school, etc.
  1. 1.
    A woman having power, authority, or ownership; a woman who exercises authority, is chief, etc.; the female head of a family, a school, etc.
    “The late queen's gentlewoman! a knight's daughter! To be her mistress' mistress!” Shak.
  2. 2.
    A woman well skilled in anything, or having the mastery over it.
    “A letter desires all young wives to make themselves mistresses of Wingate's Arithmetic.” Addison.
  3. 3.
    A woman regarded with love and devotion; she who has command over one's heart; a beloved object; a sweetheart.[Poetic]
  4. 4.
    A woman filling the place, but without the rights, of a wife; a woman having an ongoing usually exclusive sexual relationship with a man, who may provide her with financial support in return; a concubine; a loose woman with whom one consorts habitually; as, both his wife and his mistress attended his funeral.
  5. 5.
    A title of courtesy formerly prefixed to the name of a woman, married or unmarried, but now superseded by the contracted forms, Mrs., for a married, and Miss, for an unmarried, woman.
    “Now Mistress Gilpin (careful soul).” Cowper.
  6. 6.
    A married woman; a wife.[Scot.]
    “Several of the neighboring mistresses had assembled to witness the event of this memorable evening.” Sir W. Scott.
  7. 7.
    The old name of the jack at bowls.
Phrases & compounds
To be one's own mistress — to be exempt from control by another person.
02 v. i. To wait upon a mistress; to be courting.
  1. 1.
    To wait upon a mistress; to be courting.[Obs.]