Where does “Tsé Chʼéchiiʼ” come from?

Tsé Chʼéchiiʼ (Navajo) comes from Navajo tsé, from Proto-Athabaskan *tseˑ, from Proto-Athabaskan-Eyak-Tlingit *caj.

Ancestry of “Tsé Chʼéchiiʼ”, step by step

StepLanguageWordMeaning
1Navajotsérock, stone, boulder
2Proto-Athabaskan*tseˑstone
3Proto-Athabaskan-Eyak-Tlingit*caj—
Every word from Proto-Athabaskan-Eyak-Tlingit *caj →Every word from Proto-Athabaskan *tseˑ →Every word from Navajo tsé →