Where does “meina” come from?

meina (Gaulish) comes from Proto-Celtic *meinis, from Proto-Indo-European mēy(H)nis, from Proto-Indo-European (s)mēy(H)- — to cut, hew.

Ancestry of “meina”, step by step

Step	Language	Word	Meaning
1	Proto-Celtic	*meinis	—
2	Proto-Indo-European	mēy(H)nis	—
3	Proto-Indo-European	(s)mēy(H)-	to cut, hew

meina — Etymology, Origin & Word History | Etymology Explorer