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windmill

1 ENTRIES FOUND:
windmill /ˈwɪndˌmɪl/ noun
plural windmills
windmill
/ˈwɪndˌmɪl/
noun
plural windmills
Britannica Dictionary definition of WINDMILL
[count]
: a structure that has parts which are turned around by the wind and that is used to produce power, pump water, etc.
British : pinwheel 1

tilt at windmills

see 1tilt