: 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
The play, produced by The Royal Shakespeare Company, tells the story of 13-year-old Kamkwamba’s plan to build a windmill during Malawi’s famine in 2001.—Paige Bruton, semafor.com, 1 June 2026 Its iconic windmill first lit up in 1889.—Laura Manske, Forbes.com, 31 May 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