rim -
the outer part of a wheel to which the tire is attached
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 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)
rim -
the shape of a raised edge of a more or less circular object
boundary,
bound,
edge the line or plane indicating the limit or extent of something
round shape a shape that is curved and without sharp angles
rim -
(basketball) the hoop from which the net is suspended; "the ball hit the rim and bounced off"
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"