split-tail

Split-tail \Split"-tail`\ (-t[=a]l`), n. (Zool.)
   (a) A California market fish ({Pogonichthys macrolepidotus})
       belonging to the Carp family.
   (b) The pintail duck.
       [1913 Webster]
    

Pintail \Pin"tail`\, n.
   1. (Zool.) A northern duck ({Dafila acuta}), native of both
      continents. The adult male has a long, tapering tail.
      Called also {gray duck}, {piketail}, {piket-tail},
      {spike-tail}, {split-tail}, {springtail}, {sea pheasant},
      and {gray widgeon}.
      [1913 Webster]

   2. (Zool.) The sharp-tailed grouse of the great plains and
      Rocky Mountains ({Pedioc[ae]tes phasianellus}); -- called
      also {pintailed grouse}, {pintailed chicken},
      {springtail}, and {sharptail}.
      [1913 Webster]