6 letters · 14 points in Scrabble
noun a characteristic language of a particular group (as among thieves)
noun a colorless (or pale yellow or smoky) variety of zircon
noun specialized technical terminology characteristic of a particular subject
originFrom Middle English jargoun, jargon, from Old French jargon, a variant of gargon, gargun (“chatter; talk; language”).
Etymology from Wiktionary, CC BY-SA 3.0