any wheeled vehicle that is dilapidated and uncomfortable; "that old bike without rubber tires was a real boneshaker"

Boneshaker is a name used from about 1869 up to the present time, to refer to the first type of true bicycle with pedals, which was called "velocipede" (from the Latin for "fast foot") by its manufacturers. "Boneshaker" refers to the extremely uncomfortable ride, which was caused by the stiff wrought-iron frame and wooden wheels surrounded by tires made of iron.