A more thorough explanation:

A devisee is someone who is named in a will to receive a gift of real property after the owner of the property has died.

John wrote a will before he died, leaving his house to his daughter, Sarah. Sarah is the devisee of the house.

Another example could be:

When Mary's grandmother passed away, she left her a piece of land in her will. Mary is the devisee of the land.

These examples illustrate how a devisee is someone who is specifically named in a will to receive a gift of real property after the owner has died.