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1. The specialized language of a trade, profession, or similar group, especially when viewed as difficult to understand by outsiders: a crime novel that uses a lot of police jargon.
2. Nonsensical or incoherent language: "Your description will be considered as mere jargon by every man of sense" (Alexander Hamilton).
3. A hybrid language or dialect; a pidgin. Not in technical use.
intr.v. jar·goned, jar·gon·ing, jar·gons
To speak in or use jargon.
[Middle English jargoun, from Old French jargon, probably of imitative origin.]
jar′gon·ist, jar′gon·eer′ n.
a user of jargon