A ruler with absolute power; a tyrant.
A title awarded to senior members of the imperial family in the late Byzantine Empire, and claimed by various independent or semi-autonomous rulers in the Balkans (12th to 15th centuries)
The female monarch (ruler) of an empire.
The third trump or major arcana card of most tarot decks.
A female chimpanzee.
A deciduous tree, Paulownia tomentosa
The wife or widow of an emperor or equated ruler.