The Oxford Thesaurus An A-Z Dictionary of Synonyms - jargonn.

1) cant, argot, parlance, idiom, vernacular, slang; patois, Creole, dialect, pidgin; Colloq lingo: In the jargon of philately, this is known as a 'first day cover'. 2) blether or US also blather, chatter, babble, gibberish, jabber, gabble, gobbledegook or gobbledygook, prattle, patter, drivel, cackle, jabberwocky, twaddle, (stuff and) nonsense, rubbish, codswallop, balderdash, bunk, humbug, palaver, bavardage, Colloq rot, garbage, hogwash, bosh, piffle, flapdoodle, chit-chat, gab, claptrap, Slang bull, crap: When I questioned my bank manager about the fee, he just gave me a lot of jargon.