Definition of Slangs 
n 1: informal language consisting of words and
expressions that
are not considered
appropriate for formal occasions;
often vituperative or
vulgar; "their speech was full of
slang expressions"
2: a characteristic language of a particular group (as
among
thieves); "they don't speak our
lingo" [syn:
cant,
jargon,
lingo,
argot,
patois,
vernacular]
v 1: use slang or vulgar language
3: fool or hoax; "The immigrant was duped because he
trusted
everyone"; "You can't fool me!" [syn:
gull,
dupe,
befool,
cod,
fool,
put
on,
take in,
put one over,
put
one across]
4: abuse with coarse language

http://dict.die.net/slang/
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