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WordReference Random House Learner's Dictionary of American English © 2024wind•mill /ˈwɪndˌmɪl/USA pronunciation n. [countable]- Energy, Mechanical Engineeringa machine for grinding or pumping, usually a building with a structure of four sails on the outside that is spun and driven by the wind acting on the sails.
v. - to (cause to) move like a windmill: [no object]His arms were windmilling.[~ + object]windmilling his arms.
WordReference Random House Unabridged Dictionary of American English © 2024wind•mill (wind′mil′),USA pronunciation n. - Energy, Mechanical Engineeringany of various machines for grinding, pumping, etc., driven by the force of the wind acting upon a number of vanes or sails.
- Energy(loosely) a wind generator;
wind plant. - Aeronauticsa small air turbine with blades, like those of an airplane propeller, exposed on a moving aircraft and driven by the air, used to operate gasoline pumps, radio apparatus, etc.
- an imaginary opponent, wrong, etc. (in allusion to Cervantes' Don Quixote):to tilt at windmills.
v.i., v.t. - Aeronautics(of a propeller engine or turbojet engine) to rotate or cause to rotate solely under the force of a passing airstream.
- 1250–1300; Middle English; see wind1, mill1
Collins Concise English Dictionary © HarperCollins Publishers:: windmill /ˈwɪndˌmɪl; ˈwɪnˌmɪl/ n - a machine for grinding or pumping driven by a set of adjustable vanes or sails that are caused to turn by the force of the wind
- the set of vanes or sails that drives such a mill
Also called: whirligig Brit a toy consisting of plastic or paper vanes attached to a stick in such a manner that they revolve like the sails of a windmill- an imaginary opponent or evil (esp in the phrase tilt at or fight windmills)
vb - to move or cause to move like the arms of a windmill
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