wheel

/hwil/, /wil/ n [C] (ROUND OBJECT)

Definition

› a circular object, connected at the center to a bar, that is used for making vehicles or parts of machines move: the wheel of a bicycle › The wheel refers to a steering wheel (= wheel in a vehicle that you turn to make the vehicle go left or right): I never feel safe with Richard behind the wheel (= driving). Would you mind taking the wheel (= driving) for a couple of hours?

(Definition of wheel n (ROUND OBJECT) from the Cambridge Academic Content Dictionary © Cambridge University Press)