Wæter-þrúh

According to the Old English Dictionary:

wæter-þrúh

a water-pipe, conduit :-- Uueterþrúh, uua[e]terthrúch, uaeterthrouch caractis, Txts. 47, 367. Wæte[r]þrúh, Wrt. Voc. ii. 129, 1. þeotan, wæterþrúh cataractae, 13, 15. Waeterðrúm canalibus, 102, 68. wæter-þruh