'Patois' definitions:

Definition of 'patois'

noun

A characteristic language of a particular group (as among thieves); "they don't speak our lingo" [syn: slang, cant, jargon, lingo, argot, patois, vernacular]

noun

A regional dialect of a language (especially French); usually considered substandard

Definition of 'Patois'

From: GCIDE

Patois \Pa`tois"\ (p[.a]`tw[aum]"), n. [F.] A dialect peculiar to the illiterate classes; a provincial form of speech. [1913 Webster]
The jargon and patois of several provinces. --Sir T. Browne. [1913 Webster]

Synonyms of 'patois'

From: Moby Thesaurus

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