To take part in a circus; or to be displayed as if in a circus

A traveling company of performers that may include acrobats, clowns, trained animals, and other novelty acts, that gives shows usually in a circular tent.

A circular arena in a circus, where the acts are performed.

plural of circus ring

(informal) A large gathering of reporters at the scene of a news event.

A traffic intersection in the West End of London, having connections with Piccadilly, Regent Street, Shaftesbury Avenue, Haymarket, Coventry Street and Glasshouse Street; proverbially visualised as being very busy with people.

A wild party where the drug acid is taken.

(finance, slang, historical) Traders in South African mining shares.

A circus sideshow attraction in which fleas are attached (or appear to be attached) to miniature carts and other items, and encouraged to perform circus acts within a small housing.

(military, aviation, obsolete) A WWI German fighter wing. / (archaic) A barnstorming troop.