A watermill is a traditional mechanical device that harnesses the power of flowing water to perform various tasks. It consists of a large wheel or turbine, often equipped with paddles or blades, which is placed in a flowing stream or river. As the water flows over the wheel, it causes it to rotate, transferring the energy to a system of gears and machinery. This rotational motion can be used to grind grain, saw wood, or generate electricity, among other applications. The combination of the waters force and the mechanical components in a watermill enables the conversion of water power into useful work.