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1.
The most bad-ass champion in the RTS game, League of Legends. Don't let his cuddly appearance fool you, because Teemo will fuck your shit up - particularly with his mushrooms.
Teemo's DPS will rape your face.
by Mawnikuh November 16, 2010
 
2.
An annoying pissant gerbil, grinning as he fucks up your shit, the stinky bastard will ruin your whole teamfight.
That fucking Teemo and his fucking mushrooms and his fucking blind.
by FuckTeemoInHisGerbilAss November 15, 2012
 
3.
Emo kids that cut when they consider themselves teens but they are actually 12.
It seems like half the kids these days are teemo.
by Retarded_Horse November 14, 2013
 
4.
A teenage emo.
Originated in the mid-1990s, popularised by characters like that played by Claire Danes in largely-forgotten TV show "My so-called life".

Jim: "That Angela Chase character was something of a teemo huh?"
Bob: "I don't care."
Jim: "That's such a Teemo thing to say."
by J.Dubya Eekes October 15, 2010
 
5.
teen/emo. (not to be confused with actual emos) for those kids who seem to think that if they act whiney and puppy dog people will feel sorry for them instead of hating them. all i know is that they are satan and destroy everything good they come into contact with.
Goddamn! Did you hear that teemo whining back there?
by o_kf January 18, 2011