na-dene

noun

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.

adjective

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

noun

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