(science fiction) An inhabitant of an asteroid belt, especially that between Mars and Jupiter.
(rare or historical) A maker or worker of belts.
(UK, informal) Anything that is particularly good of its class.
(Britain, informal) A very good-looking person.
A belter is a person who sings forcefully using the specific vocal technique of belting.
A song suitable for forceful singing.
(science fiction) A person who mines asteroids for minerals or lives in the vicinity of an asteroid belt.
(Tyneside) Alternative spelling of belta (“fantastic; excellent”).