A more thorough explanation:

Definition: A limit is a restriction or boundary that defines the extent of power, right, or authority.

Examples:

• A speed limit of 60 miles per hour on the highway restricts drivers from going faster than that.
• The city limits of New York define the boundary of the city.
• The limit of a teacher's authority is to enforce classroom rules and discipline students.

The examples illustrate how a limit can be a restriction or boundary that defines what is allowed or possible. The speed limit restricts drivers from going too fast, the city limits define the boundary of the city, and the limit of a teacher's authority defines what they can and cannot do in the classroom.