any device for producing a current of air by the movement of a broad surface or a number of such surfaces.
an implement of feathers, leaves, paper, cloth, etc., often in the shape of a long triangle or of a semicircle, for waving lightly in the hand to create a cooling current of air about a person: We sat on the veranda, cooling ourselves with palm-leaf fans.
anything resembling such an implement, as the tail of a bird.
any of various devices consisting essentially of a series of radiating vanes or blades attached to and revolving with a central hublike portion to produce a current of air: ceiling fan; wall fan.
a series of revolving blades supplying air for winnowing or cleaning grain.