Source : Webster's Revised Unabridged Dictionary (1913)

Moon-eye \Moon"-eye`\, n.
   1. A eye affected by the moon; also, a disease in the eye of
      a horse.

   2. (Zo["o]l.)
      (a) Any species of American fresh-water fishes of the
          genus {Hyodon}, esp. {H. tergisus} of the Great Lakes
          and adjacent waters.
      (b) The cisco.