EASEMENT n.
A liberty, privilege, or advantage, which one proprietor has in the estate of another proprietor, distinct from the ownership of the soil, as a way, water course, etc. It is a species of what the civil law calls servitude. Kent.
LAPSE v.
To fall or pass from one proprietor to another, or from the original destination, by the omission, negligence, or failure of some one, as a patron, a legatee, etc.