What does watermill mean?
A watermill is a mill whose machinery is powered by a waterwheel. By harnessing the force of a river or stream, the wheel turns a shaft that can operate grinding stones and other equipment. Watermills are best known for milling grain into flour, but they have also been used for tasks such as sawing timber, manufacturing paper, and processing other agricultural products. The word commonly suggests an older rural structure, although the technology has been used in many periods and regions. Today, preserved watermills are often historic buildings, museums, or working educational sites. The term is distinct from waterwheel, which names the wheel rather than the mill powered by it. Watermill is also distinct from a windmill, whose mechanism is driven by wind. In contemporary English, the closed form watermill is standard, although the older spelling water mill remains familiar.
nounA mill powered by a waterwheel, using the energy of flowing or falling water to grind grain or operate other machinery.
- A mill powered by a waterwheel.
"The old watermill beside the river still produces flour for local bakers."
"Visitors can watch demonstrations of traditional milling at the restored watermill."
"A watermill on the estate supplied flour to the surrounding village."
The regular plural is watermills.
"Several watermills along the river have been converted into museums."
Long before steam engines and electricity, watermills turned flowing water into useful power, making rivers the engines of early industry.
Reviewed by Deb Chak, Editor. AI-assisted content curated by RJS Tech Solutions LLP.
Where does watermill come from?
Watermill is a transparent English compound formed from water and mill, names for the two elements that make the machine work. The compound has long been used in English for a mill powered by flowing water, while related forms such as miller and watermillers developed within the same vocabulary. Its basic sense has remained stable even as water-powered milling gave way to newer technologies.
Related word forms
How watermill is actually used
The term is neutral and often evokes historic, rural, or pastoral settings. In modern writing, watermill is usually closed, while water mill is a traditional two-word variant.
Easily confused with watermill
A watermill is the mill or building powered by a waterwheel, whereas a waterwheel is the rotating wheel itself.