executrix

noun3

1. •
   A female person appointed to execute the wishes of a deceased person as stated in their will; a female executor.

   • A female […] at seventeen may be executrix; and at tvventy one may dispose of herself and her lands. — 1765
2. •
   (rare) A dominatrix who acts a fantasy of killing her client.

   • The fact that a Google search for “Femdom Executrix” yields over 2,000 results for online videos is proof enough that the erotic death fantasy is an aspect […] — 2023
3. •
   (no longer used, rare) A female person who executes or carries out something.