windmill (n.)youdaoicibaDictYouDict[windmill 词源字典]
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.[windmill etymology, windmill origin, 英语词源]