Aqua ductus
Defined in 2 dictionaries — Cyclopedic (1922), Ballentine's (1916)
The Cyclopedic Law Dictionary
Walter A. Shumaker and George Foster Longsdorf; ed. James C. Cahill · 1922
In civil law. A servitude which consists in the right to carry water by means of pipes or conduits over or through the estate of another. Dig. 8. 3. 1; Inst. 2. 3; Lalaure des Serv. c. 5, p. 23.
Ballentine's Law Dictionary
James A. Ballentine · 1916
The right to run water through the land of another.