jargon

Short definition from Wiktionary

Noun

1. 1
   A technical terminology unique to a particular subject.
2. 2
   A language characteristic of a particular group.
3. 3
   Speech or language that is incomprehensible or unintelligible; gibberish.
4. 4
   Alternative form of jargoon (“A variety of zircon”).

Verb

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