Noun
1. a travelling company of entertainers; including trained animals;
"he ran away from home to join the circus"2. performance given by a traveling company of acrobats clowns and trained animals;
"the children always love to go to the circus"3. a frenetic disorganized (and often comic) disturbance suggestive of a circus or carnival;
"it was so funny it was a circus""the whole occasion had a carnival atmosphere"4. (antiquity) an open-air stadium for chariot races and gladiatorial games
5. an arena consisting of an oval or circular area enclosed by tiers of seats and usually covered by a tent;
"they used the elephants to help put up the circus"