There are many synonyms for the word "one wheel". Some popular synonyms include unicycle, monocycle and single wheel. These terms describe an individual vehicle with a single wheel that is used for transportation or recreational purposes. Other lesser-known synonyms include monowheel, monobike and monocar. Each of these terms refers to a different type of vehicle, but they all share the same characteristic of having only one wheel. One wheel vehicles can be challenging to ride, but also offer a unique and thrilling experience. Whatever you call them, one wheel vehicles are sure to turn heads and provide a memorable ride.