M 

Short for MDMA (methylenedioxymethamphetamine)

Yo, that M got me feeling like a champion.

M by Minem September 27, 2009

M 

Slang for the drug 'mentos'.
Highly addictive and is usually taken as a social drug, and breath freshener.

Whispers, "Hey Sarah...Got an M?"

M by Sez and Vi November 2, 2007

M@ 

short hand for the name Matt

Yea, the M@ he's so cute

M@ by Kaitlin January 4, 2004

\m/ 

what someone types into a chatroom, msn etc to represent the metal salute that is supposed to look like devil horns. however, nowdays it is used by posers who are fans of tryhard pop rock bands who think they are 'hardocore'.

annoying girl poser 1: OMG, i just scored tickets to the veronicas concert!!!!

annoying girl poser 2: OMG!! fully siiiiiiiick!!!!!!!!

annoying girl posers 1 & 2: WICKED!!! \m/ (both salute)! ROCK ON!!!!

\m/ by Kray-zee K October 22, 2006

m 

The 13th letter of the alphabet. Used widely in online games to reduce the amount of zeros in online currency . The "m" is used after a number to represent that number in the millions. Anything under one million is represented with k after the number.

That armor is so expensive! It costs 100m!

Hey do you have 79.9m I can borrom?

m by Dark_Loki January 3, 2007

M 

1.Short for La M or eme.
2.The Mexican Mafia.

La M has spread to many states.

M by ASESSINO January 30, 2004

*m- 

The emoticon for "lion."

-What did you see at the zoo today?
- *m-
-Was it Simba?
- . . . no.

*m- by mantra6 January 14, 2010