: a mill or machine operated by the wind usually acting on oblique vanes or sails that radiate from a horizontal shaft
especially: a wind-driven water pump or electric generator
b
: the wind-driven wheel of a windmill
2
: something that resembles or suggests a windmill
especially: a calisthenic exercise that involves alternately lowering each outstretched hand to touch the toes of the opposite foot
3
[from the episode in Don Quixote by Cervantes in which the hero attacks windmills under the illusion that they are giants]: an imaginary wrong, evil, or opponent—usually used in the phrase to tilt at windmills
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Noun
There's also an ancient windmill on-site that the team plans to restore and put to use.—Condé Nast, Condé Nast Traveler, 20 Feb. 2026 Bryant won the first round with the first perfect 50s of the contest, his powerful lob and one-handed windmill earning 50-point scores from Dwight Howard and Dominique Wilkins.—Dan Woike, New York Times, 15 Feb. 2026
Verb
All the same, Antonoff wears muscle shirts onstage and jumps off stacks of amps and pumps his fist in the air and plays windmill chords on his Gretsch Princess guitar.—Andrew Marantz, The New Yorker, 16 May 2022 The young center fielder stepped out of the batter’s box, grabbing at her shoulder, trying to windmill her arm in tiny circles.—Los Angeles Times, 2 May 2022 See All Example Sentences for windmill