Servitus luminum
Defined in 3 dictionaries — Ballentine's (1916), Black's (1910), Bouvier (1839)
Ballentine's Law Dictionary
James A. Ballentine · 1916
The right to have the light to a certain part of one’s premises unobstructed.
Black's Law Dictionary
Henry Campbell Black, M.A. · 1910
The servitude of lights; the right of making or having windows or other openings in a wall belonging to another, or in a common wall, in order to obtain light for one's building. Dig. 8, 2, 4.
Defined under Servitus in Black's Law Dictionary.
A Law Dictionary, Adapted to the Constitution and Laws of the United States
John Bouvier · 1839
civil law. The name of a servitude by which an obligation is imposed on the owner of a house to allow windows or lights to be put in his wall by the owner of the adjoining house. Dig. 4, 14, 40.