A windmill is a structure that converts wind energy into mechanical energy. It typically consists of a tall tower with large blades that rotate when the wind blows. This rotation can be used to grind grain, pump water, or generate electricity. Windmills have been used for centuries in various cultures around the world. Modern windmills, often referred to as wind turbines, are designed to produce electricity on a larger scale. They are commonly found in wind farms, where multiple turbines work together to harness wind energy efficiently. This renewable energy source helps reduce reliance on fossil fuels and contributes to a more sustainable future.