jar·gon
(jär′gən)n.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.
jar′gon·is′tic adj.
jar′gon·y adj.
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
jargoneer
(ˌdʒɑːɡəˈnɪə) or jargonist
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014