1. Sports. An arena for equestrian shows.
2. An open-air stadium with an oval course for horse and chariot races in ancient Greece and Rome.

[French, from Old French ypodrome, from Latin hippodromos, from Greek : hippos, horse + dromos, racecourse.]

The American Heritage® Dictionary of the English Language, Fourth Edition Copyright © 2007, 2000 by Houghton Mifflin Company. Updated in 2009. Published by Houghton Mifflin Company. All rights reserved.