The wheels of a vehicle are the circular objects which are fixed underneath it and which enable it to move along the ground.

A wheel is a circular object which forms a part of a machine, usually a moving part.

The wheel of a car or other vehicle is the circular object that is used to steer it. The wheel is used in expressions to talk about who is driving a vehicle. For example, if someone is at the wheel of a car, they are driving it.

People sometimes refer to a car as wheels .

If something such as a group of animals or birds wheels, it moves in a circle.

If you wheel around, you turn around suddenly where you are standing, often because you are surprised, shocked, or angry.

You use wheel in expressions such as the wheel of fortune to refer to the changes that take place in life, especially when you are referring to the fact that the same situations occur more than once.

People talk about the wheels of an organization or system to mean the way in which it operates.

If you say that there are wheels within wheels, you mean that there are a number of different influences, reasons, and actions which together make a situation complicated and difficult to understand.