fan - noun

a device for creating a current of air by movement of a surface or surfaces

an enthusiastic devotee of sports

an ardent follower and admirer

fan - verb

• strike out (a batter), (of a pitcher)
• make (an emotion) fiercer
• agitate the air
• separate the chaff from by using air currents

fan - thesaurus

buff   devotee   lover   rooter   winnow