dart·er /ˈdɑrtɚ/
 行動迅速者;漂亮的小淡水魚
 Dart·er n.
 1. One who darts, or who throw darts; that which darts.
 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.
 3. Zool. A small fresh-water etheostomoid fish. The group includes numerous genera and species, all of them American. See Etheostomoid.
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 darter
      n 1: fish-eating bird of warm inland waters having a long
           flexible neck and slender sharp-pointed bill [syn: snakebird,
            anhinga]
      2: a person or other animal that moves abruptly and rapidly;
         "squirrels are darters"