circus (n.)
- agora
- amphitheater
- annulus
- arena
- areola
- auditorium
- aureole
- background
- bowl
- burlesque
- campus
- canvas
- carnival
- chaplet
- circle
- circuit
- circumference
- cockpit
- coliseum
- colosseum
- corona
- coronet
- course
- crescent
- crown
- cycle
- diadem
- discus
- disk
- drama
- field
- floor
- forum
- garland
- glory
- ground
- gym
- gymnasium
- hall
- halo
- hippodrome
- lasso
- locale
- loop
- marketplace
- mat
- milieu
- noose
- orbit
- palaestra
- pit
- place
- platform
- precinct
- purlieu
- radius
- range
- raree-show
- ring
- rodeo
- round
- roundel
- saucer
- scene
- scenery
- setting
- sideshow
- site
- sphere
- sphincter
- stadium
- stage
- stock
- terrain
- theater
- tiltyard
- variety
- vaudeville
- walk
- wheel
- wreath