Definition - A jargon used by cliques, such as criminal groups, to prevent outsiders from understanding what they are saying.

Example -
Can you score me some down?

Etymology -
The word derives from the French argot, the jargon of Parisian rogues and thieves; in Middle French the word denoted "a group of beggars."

Oxford English Dictionary -
The term's first citation is from 1860:
"Leaves an uninviting argot in the place of warm and glowing speech."
(Farrar Orig. Lang. vi. 134)

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