(1):
(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.
(2):
(n.) A curved member instead of an abrupt change of direction, as in a baseboard, hand rail, etc.
(3):
(n.) That which gives ease, relief, or assistance; convenience; accommodation.