Darter

from WordNet (r) 3.0 (2006)

darter
    n 1: fish-eating bird of warm inland waters having a long
         flexible neck and slender sharp-pointed bill [syn:
         {snakebird}, {anhinga}, {darter}]
    2: a person or other animal that moves abruptly and rapidly;
       "squirrels are darters"

from The Collaborative International Dictionary of English v.0.48

Snakebird \Snake"bird`\, n. [So named from its snakelike neck.]
   (Zool.)
   1. Any one of four species of aquatic birds of the genus
      {Anhinga} or {Plotus}. They are allied to the gannets and
      cormorants, but have very long, slender, flexible necks,
      and sharp bills.
      [1913 Webster]

   Note: The American species ({Anhinga anhinga} syn. {Plotus
         anhinga}) inhabits the Southern United States and
         tropical America; -- called also {darter}, and {water
         turkey}. The Asiatic species ({Anhinga melanogaster})
         is native of Southern Asia and the East Indies. Two
         other species inhabit Africa and Australia
         respectively.
         [1913 Webster]

   2. (Zool.) The wryneck.
      [1913 Webster]

from The Collaborative International Dictionary of English v.0.48

Darter \Dart"er\, n.
   1. One who darts, or who throw darts; that which darts.
      [1913 Webster]

   2. (Zool.) The snakebird, a water bird of the genus {Plotus};
      -- so called because it darts out its long, snakelike neck
      at its prey. See {Snakebird}.
      [1913 Webster]

   3. (Zool.) A small fresh-water etheostomoid fish. The group
      includes numerous genera and species, all of them
      American. See {Etheostomoid}.
      [1913 Webster]

from The Collaborative International Dictionary of English v.0.48

Etheostomoid \E`the*os"to*moid\, a. [NL. etheostoma name of a
   genus + -oid.] (Zo["o]l.)
   Pertaining to, or like, the genus {Etheostoma}. -- n. Any
   fish of the genus {Etheostoma} and related genera, allied to
   the perches; -- also called {darter}. The etheostomoids are
   small and often bright-colored fishes inhabiting the fresh
   waters of North America. About seventy species are known,
   including the rare {snail darter} ({Percina tanasi}), 3
   inches long, found only in the Tennessee River and classified
   as a {threatened species}. See {Darter}.
   [1913 Webster]