1) Balancing act 2) Big wheel in the circus world 3) Circus skill 4) Circus teeterer 5) Clown conveyance 6) Clown prop 7) Monocycle 8) Ride a unicycle 9) Wheeled vehicle 1) Monocycle 
one-wheel cycle, with the cyclist above wheel.
A unicycle is a vehicle that touches the ground with only one wheel. The most common variation has a frame with a saddle, and is pedal-driven (human-powered, direct drive). ==History== It has been said{according to whom|date=February 2014} that the advent of the unicycle stems from the popularity of the penny-farthing (or `Ordinary`) during the .....
[n] - a cycle with a single wheel that is driven by pedals
unicycle Related 'around, round, surrounding' units: ambi-; ampho-; circ-; circum-; gyro-; peri-.
monocycle noun a vehicle with a single wheel that is driven by pedals
(Say: yoo - na - cycle) - A one-wheeler. Surprisingly, they can be ridden on and off road, for short and long distance.
a vehicle with a single wheel that is driven by pedals