patois -
a regional dialect of a language (especially French); usually considered substandard
dialect,
idiom,
accent the usage or vocabulary that is characteristic of a specific group of people; "the immigrants spoke an odd dialect of English"; "he has a strong German accent"; "it has been said that a language is a dialect with an army and navy"
patois -
a characteristic language of a particular group (as among thieves); "they don't speak our lingo"
patois -
A JamaicanCreole language primarily based on English and African languages but also has influences from Spanish, Portuguese and Hindi.
patois -
Jargon or cant.
Wikipedia
Patois is any language that is considered nonstandard, although the term is not formally defined in linguistics. It can refer to pidgins, creoles, dialects, and other forms of native or local speech, but not commonly to jargon or slang, which are vocabulary-based forms of cant. Class distinctions are embedded in the term, drawn between those who speak patois and those who speak the standard or dominant language used in literature and public speaking, i.e. , the "acrolect".
OmegaWiki Dictionary
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patois Language spoken in France, near the Italian and Swiss borders. Also spoken in Italy and Switzerland.