Meaning of APPURTENANCE in English
Something that, although detached, stands as part of another thing. An attachment or appendage to something else. Used often in a real estate context where an "appurtenance" may be, for example, a right-of-way over water, which, although physically detached, is part of the legal rights of the owner of another property.
Duhaime's Law English dictionary. Английский юридический словарь Duhaime . 2012