Nootka Jargon
Nootka Jargon or Nootka Lingo was a pidginized form of the Wakashan language Nuučaan̓uł, used for trade purposes by the indigenous peoples of the Pacific Northwest Coast, when communicating with persons who did not share any common language. It was most notably in use during the late 18th and early 19th centuries and was likely one precursor to Chinook Wawa, in Chinook Wawa's post-contact-form.