From The Collaborative International Dictionary of English v.0.48:
Courser \Cours"er\ (k?rs"?r), n. [F. coursier.]
1. One who courses or hunts.
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leash is a leathern thong by which . . . a courser
leads his greyhound. --Hanmer.
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2. A swift or spirited horse; a racer or a war horse; a
charger. [Poetic.] --Pope.
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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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