A Times Square like place in the center of London, England.
"Hey Bob, let's go to Picadilly Circus".
by Walla-Walla man February 10, 2004
1 more definition
a circus is another name for a circle (very British.) and Picadilly is a place and a line on the tube in London.
"...funny people in America.."
by killerqueen May 06, 2005