lingo

Etymology

From Latin lingua (“language”) + -o (diminutive suffix).

noun

1. Language, especially language peculiar to a particular group, field, or region; jargon or a dialect.
   "You see, ma'am, I can't divest myself of my professional lingo," observed Mr. Banks. 1846, George W.M. Reynolds, The Mysteries of London, volume 1, London: George Vickers, page 327
   She had Lord James' collar in one big fist and she pounded the table with the other and talked a blue streak. Nobody could make out plain what she said, for she was mainly jabbering Swede lingo, but there was English enough, of a kind, to give us some idee. 1913, Joseph C. Lincoln, chapter 12, in Mr. Pratt's Patients