\Wall"-eye`\, n. [See {Wall-eyed}.]
1. An eye in which the iris is of a very light gray or
   whitish color; -- said usually of horses. --Booth.
Note: Jonson has defined wall-eye to be ``a disease in the
      crystalline humor of the eye; glaucoma.'' But glaucoma
      is not a disease of the crystalline humor, nor is
      wall-eye a disease at all, but merely a natural
      blemish. --Tully. In the north of England, as Brockett
      states, persons are said to be wall-eyed when the white
      of the eye is very large and distorted, or on one side.
2. (Zo["o]l.)
   (a) An American fresh-water food fish ({Stizostedion
       vitreum}) having large and prominent eyes; -- called
       also {glasseye}, {pike perch}, {yellow pike}, and
       {wall-eyed perch}.
   (b) A California surf fish ({Holconotus argenteus}).
   (c) The alewife; -- called also {wall-eyed herring}.