slang
     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
     2: 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}]
     3: abuse with coarse language
Source: WordNet® 2.0