: 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
Other New Jersey farmers might be burning smudge pots in their orchards, turning on windmills, or running sprinklers.—Vanessa Murdock, CBS News, 20 Apr. 2026 Rather than filing a lawsuit, Lamont says the best move is to go forward with nuclear power and renewable energy like the windmills that have been constructed off the shores of Connecticut and Rhode Island to produce electricity.—Christopher Keating, Hartford Courant, 19 Apr. 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