mu

a Greek letter used in physics to represent a frictional constant of a surface.
For this surface, mu k equals .3825

Beware of physics cows, they go "muuuuuuuuuuuuuuuuuuuuuuu..."

by Mike the Ekim December 24, 2005
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/mu/

/mu/ is a music imageboard on 4chan consisting of nothing but heated discussions about metal albums that no-one has heard, rap-hatred, Tom Waits-love, and liberal spamming of Dragonforce or Neutral Milk Hotel songs/album covers/information.

The aim of the board is to prove to others that you have a more obscure taste in music than anyone else. The one who has the most pretentious/obscure taste wins, but no one ever wins. Also posting Insane Clown Posse is an instant fail.

It is also the most pretentious thing since Dragonforce.

Anime_Expert.jpg also originated from /mu/. Whenever someone talks about Japanese music, he appears. Though, the picture is so damn exploitable, it's been modified many times over, and is mainly used when someone makes a statement that is stereotypical of fans of the genre/band. This post is then copied, then posted with the corresponding expert.
Your favorite band sucks. If you've forgotten, /mu/ is happy to remind you. Made exclusively for discussing trv kvlt Black Metal, Daft Punk, and Dragonforce
by Necroyeti April 06, 2008
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/mu/

/mu/: Neutral Milk Hotel, Animal Collective, Burzum, Crystal Castles, Neutral Milk Hotel, Animal Collective, Burzum, Crystal Castles, Neutral Milk Hotel, Animal Collective, Burzum, Crystal Castles
by Sffoktn January 28, 2009
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mus

make up sex.
when you get on a fight with your boyfriend/girlfriend and then after the fight yo have sex.
gf: the makeup sex mus is the reason why i'm not angry with my boyfriend anymore
by movefreelol March 23, 2012
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Mus

Mus is an online handle currently used by (insert steam community link here)
though he has moved on from the squadron to be the best abang streamer, he will always be the abang of the group.

AYE YOU MOT##########################################
###############################################################

-Mus
by DeadEyeRaptor April 21, 2022
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mus

it's acctually the Norwegian slang for "Pussy". (iow, a womans holyness)
The term acctually means Mouse in english. And it does look a bit like one now doesn't it? but hey, how would YOU know!? BWUAHAHAHAHAHA...>_>; j/k
å fy faen den musa va jævli deilig <3(danm, that pussy is hawt o.O)
by anonyMUS D; August 17, 2005
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Mus

Person who leaves their friends, neighborhood, state, country, ethnicity, etc. after getting married. A person that changes their life according to his wife's choosing.
Jim became a mus and moved away
by Freinds4Life April 20, 2009
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