windmill: 意味と定義

A machine that runs on the energy generated by a wheel of adjustable blades or slats rotated by the wind.

Something, such as a toy pinwheel, that is similar to a windmill in appearance or operation.

To move or cause to move like the wheel of a windmill; rotate sweepingly.

tilt at windmills To confront and engage in conflict with an imagined opponent or threat.