c. 1300, from wind (n.1) + mill (n.). Similar formation in German Windmühle, Dutch windmolen, French moulin à vent. Verb meaning "to swing the arms wildly" is recorded from 1888. Related: Windmilled; windmilling.
windbreak
windbreaker
windfall
windhover
windlass
windmill
window
windowless
Windows
windowsill
windpipe
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