cours·er /ˈkorsɚ/
  獵狗,打獵者,駿馬
  Cours·er n.
  1. One who courses or hunts.
      leash is a leathern thong by which . . . a courser leads his greyhound.
  2. A swift or spirited horse; a racer or a war horse; a charger. [Poetic.]
  3. Zool. A grallatorial bird of Europe (Cursorius cursor), remarkable for its speed in running. Sometimes, in a wider sense, applied to running birds of the Ostrich family.
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  courser
       n : swift-footed terrestrial plover-like bird of southern Asia
           and Africa