windmill

noun
  1. 1

    A machine which translates linear motion of wind to rotational motion by means of adjustable vanes called sails.

  2. 2

    The structure containing such machinery.

  3. 3

    A child's toy consisting of vanes mounted on a stick that rotate when blown by a person or by the wind.

  4. 4

    A dunk where the dunker swings his arm in a circular motion before throwing the ball through the hoop.

  5. 5

    A guitar move where the strumming hand mimics a turning windmill.

  6. 6

    A breakdancing move in which the dancer rolls his/her torso continuously in a circular path on the floor, across the upper chest, shoulders and back, while twirling the legs in a V shape in the air.

  7. 7

    Any of various large papilionid butterflies of the genus Byasa, the wings of which resemble the vanes of a windmill.

  8. 8

    The false shower.

  9. 9

    An imaginary enemy, but presented as real.

verb
  1. 1

    To rotate with a sweeping motion.

    โ€œShe ran down the hill, windmilling her arms with glee.โ€

  2. 2

    Of a rotating part of a machine, to (become disengaged and) rotate freely.

    โ€œThe axle broke and the wheel windmilled in place briefly before careening through the wall.โ€

Source: https://en.wiktionary.org/wiki/windmill