Windmill Editorial Image

A windmill is a machine that converts the energy of wind into rotational energy by means of vanes called sails or blades.[1][2] The reason for the name windmill is that the devices originally were developed for milling grain for food production; the name stuck when in the course of history, windmill machinery was adapted to supply power for many industrial and agricultural needs other than milling.[3] The majority of modern windmills take the form of wind turbines used to generate electricity, or windpumps used to pump water, either for land drainage or to extract groundwater. Source: wikipedia