water-inch
[ waw-ter-inch, wot-er- ]
/ ˈwɔ tərˈɪntʃ, ˈwɒt ər- /
noun Hydraulics.
the quantity of water (approx. 500 cubic feet) discharged in 24 hours through a circular opening of one inch diameter leading from a reservoir in which the water is constantly only high enough to cover the orifice.
Origin of water-inch
First recorded in 1850–55