Windmill (noun)

A machine that uses wind power to generate mechanical energy or electricity, typically using a rotor with blades that are turned by the wind.

Origin:

The word 'windmill' is derived from the old english 'windmolen', meaning wind-driven mill.

Examples:

1. The farmer installed a windmill on his property to pump water for his crops.
2. The Netherlands is famous for its traditional windmills, many of which are still in use today.
3. Windmills are becoming increasingly popular as a source of renewable energy.
4. The blades on the windmill rotated slowly in the gentle breeze.
5. The company is investing in a new windmill farm in the hopes of reducing its carbon footprint.