Meaning of “wheel” - Learner’s Dictionary

wheel

noun uk us /wiːl/

A2 [ C ] a circular object fixed under a vehicle so that it moves smoothly over the ground:

My bike needs a new front wheel.
the wheel

B2 a steering wheel (= circular object you turn to direct a vehicle):

You should drive with both hands on the wheel.
He fell asleep at the wheel (= while driving).
→ See also Ferris wheel , reinvent the wheel

(Definition of “wheel noun” from the Cambridge Learner’s Dictionary © Cambridge University Press)