1) Ancient Greek architecture 2) Arena 3) Arena for horse shows 4) Arena of a sort 5) Bowl 6) Equestrian arena 7) French word used in English 8) Horse racing venue 9) Sports stadium 10) Stadium 11) Track for chariot races 12) Type of Sports venue 1) Arena 
• (n.) An arena for equestrian performances; a circus. • (n.) A place set apart for equestrian and chariot races. • (v. i.) To arrange contests with predetermined winners. • (n.) A fraudulent contest with a predetermined winner.
ancient Greek stadium designed for horse racing and especially chariot racing. Its Roman counterpart was called a circus and is best represented by ... [3 related articles]
In ancient Greece, a building used for chariot and horse racing (corresponding to the Roman circus). It was usually 180-215 m/196-235 yd long and about 120 m/130 yd wide, semicircular at one end...
A hippodrome was an Roman design to hold horse and chariot racing. 
Hip'po·drome noun [ Latin hippodromos , Greek ...; 
Hippodrome was the Greek name for the public place where the horse and chariot races were held. In Byzantine times the hippodrome at Constantinople (Istanbul) acquired great renown, and factions originating in the hippodrome caused perpetual confusion in all departments of the public service. The name is sometimes applied to a modern circus.
[n] - a stadium for horse shows or horse races
hippodrome 1. An open-air stadium in ancient Greece, or Rome, with an oval track that was used for horse or chariot racing. 2. An arena for equestrian events.
an arena in which ancient Greek equestrian events took place; the hippodrome had a large post at each end and was divided by the embolon, a stone or wood partition running down the middle; the perimeter was eight stades or a little over 1,500 meters.
noun a stadium for horse shows or horse races
an arena or structure for equestrian and other spectacles. · (in ancient Greece and Rome) an oval track for horse races and chariot races.