What does CIRCUS mean?

noun

1. a travelling company of entertainers; including trained animals“he ran away from home to join the circus”
2. a 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 large public entertainment“it was so funny it was a circus”
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”