Noun:
1: fan a device for creating a current of air by movement of a surface or surfaces
2: sports fan, fan, rooter an enthusiastic devotee of sports
3: fan, lover, buff, devotee an ardent follower and admirer
Verb:
1: fan strike out (a batter), (of a pitcher)
2: fan make (an emotion) fiercer; "fan hatred"
3: fan agitate the air
4: fan, winnow separate the chaff from by using air currents; "She stood there winnowing chaff all day in the field"