argot

noun

1. A secret language or conventional slang peculiar to thieves, tramps and vagabonds.

   “Sadie had, in the argot of the day, a really good built.”

2. The specialized informal vocabulary and terminology used between people with special skill in a field, such as between doctors, mathematicians or hackers.

   “The conversation was in the argot of the trade, full of acronyms and abbreviations that made no sense to the uninitiate.”

3. A strongly marked style of speaking.

   “Merle spoke in the thin nasal argot of this city's slums: "This the fus toim yez been lobbed, oy, kiddow?"”

4. An inhabitant or resident of Argos.