tailwater

[ teyl-waw-ter, -wot-er ]
/ ˈteɪlˌwɔ tər, -ˌwɒt ər /

noun

the water in a tailrace.

Origin of tailwater

First recorded in 1750–60; tail1 + water
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019