Easement

[Sarah]

A liberty, privilege, or advantage, which one proprietor has inthe estate of another proprietor, distinct from the ownership of thesoil, as a way, water course, etc. It is a species of what the civillaw calls servitude. Kent.

[Sarah]

A legal term for a part of a property that can be used by another property owner for limited purposes.

[Michiko]

A right to cross or otherwise use someone elses land for a specified purpose.