jargon

Etymology 1

From Middle English jargoun, jargon, from Old French jargon, a variant of gargon, gargun (“chatter; talk; language”).

noun

1. (uncountable) A technical terminology unique to a particular subject.
2. (countable) A language characteristic of a particular group.
   In fact all the competing theories have developed their own specialized jargons and have a tendency to be difficult to penetrate. 2014, Ian Hodder, Archaeological Theory Today
3. (uncountable) Speech or language that is incomprehensible or unintelligible; gibberish.

verb

1. To utter jargon; to emit confused or unintelligible sounds.

Etymology 2

noun

1. Alternative form of jargoon (“A variety of zircon”)