1. a group of North American Indian languages, comprising the Athabaskan family, Eyak, Tlingit, and Haida, hypothetically considered to be descendants of a single protolanguage: the genetic relationship of either Tlingit or Haida to Athabaskan and Eyak is now disputed.
  2. the hypothesized protolanguage itself.


  1. of, belonging to, or pertaining to Na-Dene.


  1. a phylum of North American Indian languages including Athapascan, Tlingit, and Haida

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