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