unicycle
A humain propelled vehicle with one wheel. Usually, unicycles have pedals, cranks, and seats derived from regular two-wheeled bicycles. Having been around for years as props for entertainers, they are comming back now as a proper form of transportation and recreation. Popular with people with certain mental conditions. Usually refered to as a "Uni". (also see Muni, Coker} and Trials Uni.
Example:
That crazy bastard is going down the mountain with his unicycle!
I'm going to unicycle to the store for more beer.
That crazy bastard is going down the mountain with his unicycle!
I'm going to unicycle to the store for more beer.