Where does “Peshlakai” come from?

Peshlakai (Navajo) comes from Navajo béésh łigaii, from Navajo łigaii, from Navajo bikéyah, from Navajo kéyah, from Navajo ké, from Proto-Athabaskan *-qeʔ — foot.

Ancestry of “Peshlakai”, step by step

Step	Language	Word	Meaning
1	Navajo	béésh łigaii	silver; sterling silver
2	Navajo	łigaii	white
3	Navajo	bikéyah	his land, his homeland, his country, his nation
4	Navajo	kéyah	land, country, terrain; planet
5	Navajo	ké	foot, feet; shoe
6	Proto-Athabaskan	*-qeʔ	foot

Every word from Proto-Athabaskan *-qeʔ →Every word from Navajo ké →Every word from Navajo kéyah →