driving wheel

English Thesaurus

1. a wheel that drives a motor vehicle (transforms torque into a tractive force) (noun.artifact)

hypernym	:	wheel,
definition	:	a simple machine consisting of a circular frame with spokes (or a solid disc) that can rotate on a shaft or axle (as in vehicles or other machines) (noun.artifact)

part meronym	:	drive line, drive line system,
definition	:	mechanism that transmits power from the engine to the driving wheels of a motor vehicle (noun.artifact)