A more thorough explanation:

(noun) Land that is surrounded by a fence, wall, hedge, ditch, or any other physical boundary that marks its limits.

For example, a farmer may enclose a piece of land with a fence to keep their livestock from wandering off. However, it is important to note that the physical boundary created by the enclosure may not always match the legally described boundaries of the land, which can lead to legal issues.

Enclosures can also be found in urban areas, such as a backyard enclosed by a fence or a park enclosed by a wall.

Overall, an enclosure is a physical boundary that marks the limits of a piece of land or property.