(a performance by) a travelling group of people and animals who entertain the public with acts of skill and daring
a noisy badly behaved meeting, etc.
a round open area where a number of streets join together
"he ran away from home to join the circus"
"the children always love to go to the circus"
"it was so funny it was a circus"
"the whole occasion had a carnival atmosphere"
"they used the elephants to help put up the circus"