Where does “zo” come from?

zo (Réunion Creole French) comes from French os, from Middle French os, from Old French os, from Latin ossum, from Latin ōs, from Proto-Italic ōs, from Proto-Indo-European h₃ésth₁ — bone.

zo (Réunion Creole French): bone

Definitions

bone

Ancestry of “zo”, step by step

Step	Language	Word	Meaning
1	French	os	bone
2	Middle French	os	bone
3	Old French	os	bone
4	Latin	ossum	bone; kernel, stone
5	Latin	ōs	mouth
6	Proto-Italic	ōs	mouth
7	Proto-Indo-European	h₃ésth₁	bone

Every word from Proto-Indo-European h₃ésth₁ →Every word from Proto-Italic ōs →Every word from Latin ōs →