n.
1.a group of Amerindian languages (the name coined by an American anthropologist, Edward Sapir)
2.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
Idiom of the Day
use (someone or something) as an excuse
to blame someone or something for something
My friend used his busy schedule as an excuse not to help us.