κίρκος

Kírkos is Greek for a ring or circle. Latin borrowed it as circus, and the Circus Maximus in Rome was the largest chariot-racing venue in the ancient world — a track 621 meters long and 118 meters wide, with seating for an estimated 150,000 spectators. The circus was not entertainment for children. It was mass spectacle, political theater, and occasionally a venue for public executions. The word meant the oval track, not what happened on it.

After the fall of Rome, the word went dormant for a thousand years. When Philip Astley, a former cavalry officer, opened a riding school in London in 1768, he arranged his performances in a circular ring 42 feet in diameter — the size, he discovered, that a horse could comfortably gallop while a rider stood on its back. Astley did not call his show a circus. His rival Charles Hughes did, in 1782, when he opened the Royal Circus in London. The Latin word was back.

The American circus added the big top — a canvas tent that could be erected and dismantled as the show traveled from town to town. P.T. Barnum's circus, which merged with James Bailey's in 1881, became the template: a traveling show under a tent, with acrobats, clowns, trained animals, and sideshow acts. The Ringling Brothers bought Barnum & Bailey in 1907. The circus became an American institution.

The word expanded figuratively. A media circus, a political circus, a three-ring circus of competing priorities. In every case, the circle is still there — the sense of everything happening at once, in a ring, with an audience watching. Cirque du Soleil, founded in 1984, dropped the animals but kept the circle and the spectacle. The Greek ring has been continuous for 2,500 years.