A wheel with fans on its rim for producing a current of air.

plural of sports fan

A familiar form of address, a jocular term of endearment. / Used other than figuratively or idiomatically: see sports, fan.

Alternative spelling of winnowing fan

plural of winnowing-fan

plural of extractor fan

plural of fan marker

(aviation) An obsolescent type of marker beacon, usually used to mark en route airways but occasionally used as part of a non-precision approach, which radiates in a pattern that is considerably wider, from the perspective of an aircraft approaching the marker along the airway, than it is long (allowing an aircraft to pick up the signal from the marker even if slightly to one side of the airway's centerline).

Alternative spelling of fan fiction

Of a bird, having a tail that is narrow at the base and fans out towards the tips.