#1 slang n. [slang expression, slang term] 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". wn
#2 slang v. use slang or vulgar language. wn
#3 slang n. [cant, jargon, lingo, argot, patois, vernacular] a characteristic language of a particular group (as among thieves); "they don't speak our lingo". wn
#4 slang v. [gull, dupe, befool, cod, fool, put on, take in, put one over, put one across] fool or hoax; "The immigrant was duped because he trusted everyone"; "You can't fool me!". wn
#5 slang v. abuse with coarse language. wn
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