Where does “ne-oino-los” come from?

ne-oino-los (Proto-Italic) comes from Proto-Italic oinos, from Proto-Indo-European óynos — one; single.

Ancestry of “ne-oino-los”, step by step

Step	Language	Word	Meaning
1	Proto-Italic	oinos	cardinal number 1 Previous: n/a Next: *duō;...
2	Proto-Indo-European	óynos	one; single

ne-oino-los — Etymology, Origin & Word History | Etymology Explorer