Tsimshian
noun
Tsim·shi·an ˈchim-shē-ən 
ˈ(t)si-
plural Tsimshian or Tsimshians
1
: a member of a group of American Indian peoples of west central British Columbia and southern Alaska
2
: the family of closely related languages spoken by the Tsimshian peoples
Word History
Etymology
Tsimshian (Coast and Southern Tsimshian languages) c̓msyan, a self-designation, literally, inside the Skeena (River)
First Known Use
1836, in the meaning defined at sense 1