Any fish of the family Lethrinidae.
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.
The male monarch or ruler of an empire.
Any monarch ruling an empire, irrespective of gender, with "empress" contrasting to mean the consort of an emperor.
A type of commercially-fished crab, Chionoecetes bairdi or Chionoecetes opilio.
A person whose occupation is to tan hides, or convert them into leather by the use of tan.
A former British coin worth six old pence.