Patois

n.

1.

A dialect peculiar to the illiterate classes; a provincial form of speech. The jargon and patois of several provinces. - Sir T. Browne.

Noun	1.	patois - a characteristic language of a particular group (as among thieves); "they don't speak our lingo" Synonyms: argot, jargon, lingo, vernacular, slang, cant
	2.	patois - a regional dialect of a language (especially French); usually considered substandard

Acadian, Anglo-Indian, Brooklynese, Cajun, Canadian French, Cockney, French Canadian, Gullah, Midland, Midland dialect, New England dialect, Pennsylvania Dutch, Yankee, Yorkshire, argot, bundle of isoglosses, cant, class dialect, colloquial, dialect, dialect atlas, dialect dictionary, gibberish, gobbledygook, idiom, isogloss, jargon, lingo, linguistic atlas, linguistic community, linguistic island, local dialect, localism, mumbo jumbo, patter, phraseology, provincialism, regional accent, regionalism, scatology, slang, speech community, subdialect, taboo language, vernacular, vocabulary, vulgar language, vulgate