Meaning ofwindmillingin English

Verb

1. rotating with a sweeping motion; moving in a circle
   The athlete's arms were windmilling as she tried to regain her balance.
2. to rotate freely (without engagement)
   The uncontrolled wheel started windmilling down the hill.
3. operating a windmill (as an action)
   The farmer was windmilling to grind the grain into flour.