dungeon mistress

noun4

1. •
   A woman who manages a dungeon (a room dedicated to sadomasochistic sexual activity).

   • “You’re a smokin’ hot dungeon mistress,” the salesclerk said. […] Even under her jacket, she felt every bit as powerful as any dungeon mistress who ever shopped at Wild Walt’s Leather ’n’ Lace. — 2010
2. •
   A woman who supervises a dungeon (a room dedicated to sadomasochistic sexual activity).

   • And why was the finger pointed at her by a sister equally seduced by sadomasochism? At first, we consulted the dungeon mistress. She had watched the scene in question. — 1995
3. •
   A game mistress in Dungeons & Dragons games.

   • Relatively few coeds played Dungeons and Dragons. I never heard of a dungeon mistress running things, although one or two might have tried it. — 1995
4. •
   (rare) A woman who manages a dungeon (an underground prison or vault).