a fanatic or an enthusiastic admirer of something;
e.g. I'm a big fan of the band 'Tame Impala'.
(noun)
a hand-held device made of extendable material, or slats of material, collected together at one end, that may be opened out and waved back and forth to move air towards oneself and cool oneself;
e.g. It was common for women in the Victorian Era to carry a fan as an accessory to cool themselves.
(noun)
an electrical or mechanical device that moves air, used to cool;
e.g. A ceiling fan can help circulate the air in your room.