monowheel

English

Etymology

mono- +‎ wheel

Noun

monowheel (plural monowheels)

1. A vehicle similar to a unicycle, its rider sitting within or adjacent to the single wheel.
   • 1926, Mary Hastings Bradley, Caravans and Cannibals:

     We had bought the monowheel at Portal, where it had been left for sale by an absent missionary; it was a single bicycle wheel with a seat arranged on it […]

Derived terms

• monowheel tractor