The male monarch or ruler of an empire.
A large, relatively valuable marble in children's games.
Any of various butterflies of the subfamily Charaxinae.
Specifically, the ruler of the Holy Roman Empire; the world-monarch.
Any of various large dragonflies of the cosmopolitan genus Anax.
An emperor penguin.
The fourth trump or major arcana card of the tarot deck.
Any monarch ruling an empire, irrespective of gender, with "empress" contrasting to mean the consort of an emperor.
Any fish of the family Lethrinidae.
vicegerent, viceroy
A fairy chess piece that can only be moved one space up, down, left or right.
An ancient Mesopotamian 𒈛 (sukkal).
The highest-ranking official or minister in ancient Egypt or Ebla; a chief administrator or a chancellor.
A high-ranking official or minister in an Islamic government, especially in the Ottoman Empire.