The wind makes them spin (5)

I believe the answer is:

vanes

(Other definitions for vanes that I've seen before include "Blades of a windmill (5)" , "Blades of a propellor or windmill sails" , "Blades of windmill or propellers" , "Weathercocks" , "They show wind direction" .)

I've seen this clue in the USA Today.

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