Wtf does EMO mean?

hunnie-bunches
OK I know you guys probably think I'm nuts but I see this weird a$$ word everywhere so what the hell does it men? Example: I have this friend and she is the emo type? WTF? Like does it mean emotional or something? or is it a new word for bi sexual? someone please answer because this little word is driving me freaking crazy!
Updates
+1 y
OK I GET IT NOW!
Wtf does EMO mean?
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