- slang: a characteristic language of a particular group (as among thieves); "they don't speak our lingo"
- Argot (French, Spanish and Catalan for "slang") is a secret language used by various groups—including, but not limited to, thieves and other criminals—to prevent outsiders from understanding their conversations. ...
- A secret language or conventional slang peculiar to thieves, tramps, and vagabonds; The specialized informal vocabulary and terminology used between people with special skill in a field, such as between doctors, mathematicians or hackers; a jargon
- the jargon of a group or class; slang.
- Jargon used by a particular group of people, often obscure to those outside it.
- Slang, jargon; as used by Patron-Minette, the Thénardiers, and other denizens of the underworld.
- A specialized way of speaking or writing "often characterized by a unique vocabulary, used by a particular class, profession, or social group." [After The History of the English Language by Seth Lerer.]
- The jargon, slang or peculiar phraseology of a class; originally that of thieves and vagabonds.
- ar gO local vocabulary for special group