Chinook jargon

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Chinook jargon,

lingua francalingua franca
, an auxiliary language, generally of a hybrid and partially developed nature, that is employed over an extensive area by people speaking different and mutually unintelligible tongues in order to communicate with one another.
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 of early traders on the Northwest Coast of the United States and Canada. It included Chinook, Nootka, English, and French words, with various borrowings.
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References in periodicals archive ?
Criminal trials were frequently conducted in Chinook Jargon.
By the early 1900s, there were dozens of Chinook Jargon dictionaries on the market.
Declining use of tribal languages and the general adoption of Chinook jargon as the community's symbolic Indian language further supported a new identity.
As a result, such places as the formerly named Squaw Creek State Natural Site - a forest fronting the ocean south of Yachats, has been renamed with the Chinook jargon for "Beautiful Woman.
The Chinook jargon means "double-striped little squirrel" and was the nickname of a Molalla Indian, Charlie Tufti, who homesteaded in the area in the early 1900s.