Simple Definition of fan

from our Learner's Dictionary

fan

1 of 3

noun

plural fans
: a machine or device that is used to move the air and make people or things cooler: such as
a
: a flat device that is held in your hand and waved back and forth in front of your face
b
: an electrical machine that has turning blades
The engine was cooled by an electric fan.

fan

2 of 3

verb

fans; fanned; fanning
1
: to move air on or toward (someone or something) with a fan
He fanned himself with a newspaper while he waited for the bus.

Note: To fan a fire is literally to blow air onto a fire so that it will burn more strongly. In figurative use the phrase fan the fires/flames means to make an emotional situation more dangerous, so that people become angrier and more likely to act in a violent way.

2
baseball, informal : to strike out
The pitcher has fanned six batters in the first three innings.
The batter fanned on a curveball.

fan

3 of 3

noun

plural fans
: a person who likes and admires someone (such as a famous person) or something (such as a sport or a sports team) in a very enthusiastic way
I am a huge baseball fan.
sports fans
He's her biggest/greatest fan.
He is not a fan of insurance companies. [=he doesn't like insurance companies]

Cite this Entry

“Fan.” Merriam-Webster.com Simple Definition, Merriam-Webster, https://www.merriam-webster.com/simple/fan. Accessed 16 Apr. 2026.

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