Wiktionary
watermills
n. (plural of watermill English)
Usage examples of "watermills".
From here it was just possible to see over gentle slopes to the watermills along the Berufal, and the barges on the Beruth.
The next stack was water power: watermills, ponds of stocked fish, herring runs, bridges to be protected or destroyed as enemies advanced, dams that could flood lowlands, anticipated rainfall, and so on.