HP Sassoon(1) 137.18 :ואי אמשיכינון א{ו}<י>ידי נרזבא פסולין‏ : but if he drew (the water) in by way of the spout, it is unfit
See the entire entry for ˀyydy prep. by way of

HP Sassoon(1) 137.18 :ואי אמשיכינון א{ו}<י>ידי נרזבא פסולין‏ : if he drew it in (to the ritual bath) [i.e. the water] by means of a rain spout, it is unfit
See the entire entry for narziḇ, narzəḇā n.m. drain pipe