Where does “zebra” come from?

zebra (Basque) comes from Spanish cebra, from Old Spanish ezebra, from Vulgar Latin eciferus, from Latin equiferus, from Latin equus, from Proto-Italic ekwos, from Proto-Indo-European h₁éḱwos, from Proto-Indo-European h₁oh₁ḱu- — swift.

zebra (Basque): zebra

Definitions

zebra

Ancestry of “zebra”, step by step

Step	Language	Word	Meaning
1	Spanish	cebra	zebra
2	Old Spanish	ezebra	—
3	Vulgar Latin	eciferus	fool, wild ass, donkey; wild horse
4	Latin	equiferus	wild horse
5	Latin	equus	a horse; a steed, charger
6	Proto-Italic	ekwos	horse
7	Proto-Indo-European	h₁éḱwos	stallion, horse
8	Proto-Indo-European	h₁oh₁ḱu-	swift

Every word from Proto-Indo-European h₁oh₁ḱu- →Every word from Proto-Indo-European h₁éḱwos →Every word from Proto-Italic ekwos →