Tlingit Syllabification: (Tlin·git)Pronunciation: /ˈtliNG(g)it/Definition of Tlingit noun (plural same or Tlingits) 1a member of an American Indian people of the coasts and islands of southeastern Alaska and adjacent British Columbia. 2the Na-Dene language of the Tlingit. adjective relating to the Tlingit or their language. Origin:the name in TlingitTlingit in other Oxford dictionaries Definition of Tlingit in the British & World English dictionary