n.
1.a member of any of the North American Indian groups speaking an Athapaskan language and living in the subarctic regions of western Canada and central Alaska
2.a group of Amerindian languages (the name coined by an American anthropologist, Edward Sapir)
Idiom of the Day
unfamiliar territory
an area of knowledge unknown to the speaker
Trying to pilot an airplane was unfamiliar territory for the flight attendant.