What does unicycle mean?
A unicycle is a pedal-driven vehicle with a single wheel, a seat, and a frame that allows the rider to control the machine by shifting their weight. Unlike a bicycle, which is stabilized by two wheels, a unicycle depends entirely on the rider's balance and coordination. It is used for recreation, transportation over short distances, circus and street performance, and competitive events such as unicycling trials. The word is also associated with skill and daring because even a modest journey can require practice to maintain control. Its construction clearly communicates its meaning: "uni-" refers to one, while "cycle" refers to a wheeled vehicle or wheel. Although a unicycle is simpler in structure than many other vehicles, learning to ride one can be surprisingly demanding. Its unusual appearance also makes it especially memorable and visually distinctive in public settings.
nounA unicycle is a vehicle with a single wheel, pedals, and a seat, propelled and balanced by the rider.
- A vehicle consisting of one wheel connected to a seat and pedals, controlled by the rider's balance and leg movements.
"She rode a unicycle across the courtyard, weaving gracefully between the benches."
"The children raced their unicycles around the park."
"Unicycling requires a combination of balance, coordination, and controlled speed."
The standard plural is formed by adding "-s" to the noun.
"Several unicycles were lined up beside the stage."
A unicycle has only one wheel, yet riding it requires the balance and coordination associated with much more complicated machines.
Reviewed by Deb Chak, Editor. AI-assisted content curated by RJS Tech Solutions LLP.
Words that share this root
Related word forms
How unicycle is actually used
The term is neutral in register and used in British and American English. The alternative "one-wheeler" is informal but widely understood.
Easily confused with unicycle
A unicycle has one wheel, whereas a bicycle has two.