mistresses

noun

1. A woman, specifically one with great control, authority or ownership

   (male equivalent) master

2. A female teacher

   (male equivalent) master

3. The other woman in an extramarital relationship, generally including sexual relations

4. A dominatrix

   (male equivalent) master

5. A woman well skilled in anything, or having the mastery over it

6. A woman regarded with love and devotion; a sweetheart

7. A married woman; a wife

8. The jack in the game of bowls

9. A female companion to a master (a man with control, authority or ownership)