- Pluto - a cartoon character created by Walt Disney
--1 is a kind of fictional character, fictitious character, character
- Pluto, Hades, Aides, Aidoneus - (Greek mythology) the god of the underworld in ancient mythology; brother of Zeus and husband of Persephone
--2 is a kind of Greek deity
- Pluto - the second smallest planet and the farthest known from the sun; has the most elliptical orbit of all the planets
--3 is a kind of superior planet
--3 is a member of solar system - Pluto, Hades, Aides, Aidoneus - (Greek mythology) the god of the underworld in ancient mythology; brother of Zeus and husband of Persephone