moonfish Meaning, Definition & Usage

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

WordNet

Moon"fish` noun
Definitions
  1. (Zoöl.) (a) An American marine fish (Vomer setipennis); -- called also bluntnosed shiner, horsefish, and sunfish. (b) A broad, thin, silvery marine fish (Selene vomer); -- called also lookdown, and silver moonfish. (c) The mola. See Sunfish, 1.

Webster 1913