A traffic circle is a circular structure in the road at a place where several roads meet. You drive round it until you come to the road that you want.
[US]regional note: in BRIT, use roundabout
traffic circle in British English
noun
US and Canadian
a road junction in which traffic streams circulate around a central island
Also called (in Britain and certain other countries): roundabout
traffic circle in American English
US
a circular street at the intersection of several streets with vehicles traveling in one direction only, designed to facilitate the flow of traffic; rotary
Examples of 'traffic circle' in a sentence
traffic circle
There was a traffic circle just south of the road leading from the exit.