Webster’s Revised Unabridged Dictionary · 1913
Courser
Cours′er (k?rs′?r), n. [F. coursier.] 1. One who courses or hunts.
leash is a leathern thong by which . . . a courser leads his greyhound. Hanmer.
2. A swift or spirited horse; a racer or a war horse; a charger. [Poetic.] Pope.
3. (Zoöl.) 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.