emperor

a male ruler of an empire or a country that is part of an empire

emperador, soberano

• the emperor of somewhere

Collocations emperor of China · Roman emperor

• He was the first emperor of Rome.

  Él fue el primer emperador de Roma.

a male animal, especially a bird such as a penguin or an emperor goose

macho, rey (de animales)

• the emperor of something

Collocations emperor penguin · emperor goose

• The emperor penguin is the largest species.

  El pingüino emperador es la especie más grande.