Where does “Dibé Nitsaa” come from?

Dibé Nitsaa (Navajo) comes from Navajo dibé, from Proto-Athabaskan *dəweˑ.

Ancestry of “Dibé Nitsaa”, step by step

Step	Language	Word	Meaning
1	Navajo	dibé	sheep
2	Proto-Athabaskan	*dəweˑ	—