smooth sole

from The Collaborative International Dictionary of English v.0.48

Scaldfish \Scald"fish`\, n. [Scald, a. + fish.] (Zool.)
   A European flounder ({Arnoglossus laterna}, or {Psetta
   arnoglossa}); -- called also {megrim}, and {smooth sole}.
   [1913 Webster]

from The Collaborative International Dictionary of English v.0.48

Sole \Sole\, n. [F. sole, L. solea; -- so named from its flat
   shape. See {Sole} of the foot.] (Zool.)
   (a) Any one of several species of flatfishes of the genus
       {Solea} and allied genera of the family {Soleidae},
       especially the common European species ({Solea
       vulgaris}), which is a valuable food fish.
   (b) Any one of several American flounders somewhat resembling
       the true sole in form or quality, as the California sole
       ({Lepidopsetta bilineata}), the long-finned sole
       ({Glyptocephalus zachirus}), and other species.
       [1913 Webster]

   {Lemon}, or {French}, {sole} (Zool.), a European species of
      sole ({Solea pegusa}).

   {Smooth sole} (Zool.), the megrim.
      [1913 Webster]