A specialized vocabulary or set of idioms used by a particular group: thieves' argot. See Synonyms at dialect.(noun)
American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
Use "argot" in a sentence
"Oh well, the stir, or the pen, as they call it in convict argot, is a training school for philosophy."
"And by "the peg," in the argot, is meant the place where a free meal may be obtained."
"Slim Gaillard's Vout dictionary: jazz hipster argot from the 30s"