windmill Benennung

DefGEMET: A machine for grinding or pumping driven by a set of adjustable vanes or sails that are caused to turn by the force of the wind. (Source: CED)

windmill - A device that uses wind power to mill grain into flour. Informally used as a synonym for wind generator or wind turbine, and to describe machines that pump water with wind power (Wind Energy Foundation WWW20180425 http://windenergyfoundation.org/about-wind-energy/glossary/)