A more thorough explanation:

Definition: To surround or encompass; to fence or hem in on all sides. To place something in a parcel or envelope.

Example 1: The garden was inclosed by a tall fence to keep the animals out.

Example 2: She inclosed the letter in an envelope and sent it off.

These examples illustrate the definition of inclose. In example 1, the garden is surrounded by a fence on all sides, which is an example of inclosing. In example 2, the letter is placed inside an envelope, which is another way of inclosing something.