wheel · noun C /wiːl/
wheel
A2 a circular object fixed under a vehicle so that it moves smoothly over the ground
Dictionary examples:
My bike needs a new wheel.
He lost control of his car when the front/rear wheel hit a rock.
Learner example:
I ride my bicycle [every day], but now its front wheel is broken. (Preliminary English Test; B1; Polish)
the wheel
B2 a steering wheel
Dictionary example:
You should keep both hands on the wheel when driving.
Learner example:
On the continent Barbara and I took turns at the wheel and early next morning we reached the Spanish border. (First Certificate in English; B2; Polish)