Machines or structures turned by wind to do work

• Traditional mills for grinding; also modern wind turbines for power

A child's toy with vanes that spin when blown

A sweeping circular motion called a windmill in sports or dance

• Includes a basketball dunk, a breakdance move, or a guitar strum

Imaginary enemies mistakenly treated as real, from Don Quixote

Third-person singular present of windmill

• Moves arms or parts in a broad circular motion
• Spins freely like a wind-driven rotor