F0 a building or structure with large blades on the outside that, when turned by the force of the wind, provide the power for getting water out of the ground or crushing grain

F0 a WIND TURBINE(Cf. ↑wind turbine)

F0 (_{US ALSO} pinwheel) a child's toy that consists of a stick with brightly coloured pieces of plastic at one end which turn around when you blow them or hold the toy in the wind