hippodrome (n.)youdaoicibaDictYouDict[hippodrome 词源字典]
1580s, from French hippodrome, from Latin hippodromos "race course," from Greek hippodromos "chariot road, race course for chariots," from hippos "horse" (see equine) + dromos "course" (see dromedary). In modern use for "circus performance place," and thus extended to "large theater for stage shows."[hippodrome etymology, hippodrome origin, 英语词源]