wheel 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)
waggon,
wagon any of various kinds of wheeled vehicles drawn by an animal or a tractor
hoop,
ring a rigid circular band of metal or wood or other material used for holding or fastening or hanging or pulling; "there was still a rusty iron hoop for tying a horse"
wheel spoke,
spoke,
radius support consisting of a radial member of a wheel joining the hub to the rim
