empress

noun6

1. •
   The female monarch (ruler) of an empire.

   • Sit downe by her: adorned with my Crowne, As if thou wert the Empresse of the world. — 1587
2. •
   The wife or widow of an emperor or equated ruler.

   • Empress, imperial regent, and even emperor herself (r. 797–802), Irene was an important and powerful figure at the Byzantine court in the late eighth and early ninth century. — 2008
3. •
   The third trump or major arcana card of most tarot decks.
4. •
   A deciduous tree, Paulownia tomentosa
5. •
   A fairy chess piece which combines the moves of the rook and the knight.
6. •
   (rare) A female chimpanzee.

noun1

1. •
   The title of an empress.