Flumen
Black's Law Dictionary · Henry Campbell Black, M.A. · 1910
Black's Law Dictionary
In Roman law. A servitude which consists in the right to conduct the rain-water, collected from the roof and carried off by the gutters, onto the house or ground of one's neighbor.
Mackeld. Rom. Law, § 317; Ersk. Inst. 2, 9, 9.
Also a river or stream.
In old English law
Flood; flood-tide.