/ ˈwɪndmɪl; NAmE / noun
1.
a building with machinery for grinding grain into flour that is driven by the power of the wind turning long arms (called sails )
2.
a tall thin structure with parts that turn round, used to change the power of the wind into electricity
3.
( BrE ) ( NAmE pin·wheel ) a toy with curved plastic parts that form the shape of a flower which turns round on the end of a stick when you blow on it
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IDIOMS
see tilt verb