Where does “tsékooh hatsoh” come from?

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

Ancestry of “tsékooh hatsoh”, step by step

StepLanguageWordMeaning
1Navajotsékoohrock canyon, gorge
2Navajotsérock, stone, boulder
3Proto-Athabaskan*tseˑstone
4Proto-Athabaskan-Eyak-Tlingit*caj—
Every word from Proto-Athabaskan-Eyak-Tlingit *caj →Every word from Proto-Athabaskan *tseˑ →Every word from Navajo tsé →