1. (noun)moonfish, Atlantic moonfish, horsefish, horsehead, horse-head, dollarfish, Selene setapinnis any of several silvery marine fishes with very flat bodies Synonyms: horse-head, horsehead, moonfish, opah, horsefish, dollarfish
2. (noun)opah, moonfish, Lampris regius large elliptical brightly colored deep-sea fish of Atlantic and Pacific and Mediterranean Synonyms: horse-head, horsehead, moonfish, opah, horsefish, dollarfish