big top


noun

the largest or main tent of a circus.
a circus.

Origin of big top

An Americanism dating back to 1890–95

British Dictionary definitions for big top

big top

noun informal

the main tent of a circus
the circus itself

Idioms and Phrases with big top

big top

1

The main tent of a circus, as in The high-wire act is almost always in the big top. [c. 1840]

2

Underworld slang for a maximum-security prison, as in He was sentenced to ten years in the big top. [1950s]