Argot is a noun that refers to the jargon or slang of a particular group.
Borrowed from the French in the mid 19th century, our word of the day refers to the ‘language’ of a particular group. But don’t be misled by the term ‘language.’ German is not an argot, but cyberspeak is.
Ed tends to get confused by the argot his grandkids use. When he heard that Tommy’s house was ‘lit,’ he called the fire department.