"moonfish" in the noun sense
1. moonfish, Atlantic moonfish, horsefish, horsehead, horse-head, dollarfish, Selene setapinnis
any of several silvery marine fishes with very flat bodies
2. opah, moonfish, Lampris regius
large elliptical brightly colored deep-sea fish of Atlantic and Pacific and Mediterranean
Source: WordNet® (An amazing lexical database of English)
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