Noun
A dialect peculiar to the illiterate classes; a provincial form of speech.
Source: Webster's dictionarythey don't speak our lingo Source: Internet
"But just because a word has briefly become part of the nation's playground patois, does that qualify it for a place in the OED? Source: Internet
All of these new arrivals became denizens of Marseilles, speaking their own patois, eating the distinctive food of the city, and engaging in a strict honor code. Source: Internet
A review of BMT mentions your use of patois, adding that “Mordecai pays us the compliment of respecting that readers have more than one way of understanding a word and a concept.” Source: Internet
“Utterly riveting, swaggering with stylish machismo and precise ear for kitchen patois.” Source: Internet
In 1794, Bertrand Barère submitted his "report on the patois" to the Committee of Public Safety in which he said that "federalism and superstition speak Breton". Source: Internet