Where does “Zacatecas” come from?

Zacatecas (Spanish) comes from Nahuatl zacatēcah, from Nahuatl zacatl, from Uto-Aztecan saka-t.

Ancestry of “Zacatecas”, step by step

Step	Language	Word	Meaning
1	Nahuatl	zacatēcah	—
2	Nahuatl	zacatl	grass
3	Uto-Aztecan	saka-t	—