windmill:1

noun
wind*mill \ ˈwin(d)-ˌmil \
13th century{ds||1|a|}
  • a mill or machine operated by the wind usually acting on oblique vanes or sails that radiate from a horizontal shaft; especially : a wind-driven water pump or electric generator
  • the wind-driven wheel of a windmill
  • something that resembles or suggests a windmill; especially : a calisthenic exercise that involves alternately lowering each outstretched hand to touch the toes of the opposite foot

windmill:2

verb
windmill \
1914{ds|t|||}
  • to cause to move like a windmill
  • to move like a windmill; especially : to spin from the force of wind
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