a level oblong space surrounded on three sides by seats of wood, earth, or stone, rising in tiers one above another, and divided lengthwise through the middle by a barrier around which the track or course was laid out. it was used for chariot races, games, and public shows.-a circular inclosure for the exhibition of feats of horsemanship, acrobatic displays, etc. also, the company of performers, with their equipage.-circuit; space; inclosure.