windmills is a form of:

Windmill



noun
1.
(a mill worked by the action of wind blowing on vanes fixed on a shaft at the top of a tower. -fight (or tilt at) windmills to fight imaginary opponents) ម៉ាស៊ីន កិនស្រូវដើរដោយកម្លាំងខ្យល់, ខ្យល់
ENGLISH MEANING
noun
1.
A mill operated by the power of the wind, usually by the action of the wind upon oblique vanes or sails which radiate from a horizontal shaft.