Definitions by Pirate Dan
penny-farthing
One of those bicycles with the front wheel really big and the back one really small. No chain, yet the pedals were on the front wheel.
Penny-Farthings are the grandfather of unicycles.
penny-farthing by Pirate Dan June 2, 2003
unicycle
A one wheeled vehicle powered by usually by pedals (there are motor driven ones) with a seat and frame extending from the wheel.
unicycle by Pirate Dan June 2, 2003