windmill
US /ˈwɪnd.mɪl/
UK /ˈwɪnd.mɪl/

1.
molino de viento
a building with sails or blades that are turned by the wind and used to generate electricity or mill grain
:
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The old windmill stood majestically on the hill.
El viejo molino de viento se alzaba majestuosamente en la colina.
•
Modern windmills are often part of large wind farms.
Los molinos de viento modernos suelen formar parte de grandes parques eólicos.
1.
agitar, hacer molinetes
to move one's arms in a circular motion, like the sails of a windmill
:
•
He started to windmill his arms to get attention.
Empezó a agitar los brazos como un molino para llamar la atención.
•
The boxer learned to windmill his punches for maximum impact.
El boxeador aprendió a agitar sus golpes para un impacto máximo.