fan

(noun) a device for creating a current of air by movement of a surface or surfaces.

(noun) an enthusiastic devotee of sports. Synonyms: sports fan, rooter.

(noun) an ardent follower and admirer. Synonyms: buff, devotee, lover.

(verb) strike out (a batter), (of a pitcher).

(verb) make (an emotion) fiercer. Examples: "Fan hatred."

(verb) agitate the air.

(verb) separate the chaff from by using air currents. Synonyms: winnow. Examples: "She stood there winnowing chaff all day in the field."