Where does “fuinseog” come from?

fuinseog (Irish) comes from Old Irish uinnius, from Proto-Celtic osnistū, from Proto-Celtic osnos, from Proto-Indo-European h₃es-nos.

fuinseog (Irish): common ash

Definitions

Step	Language	Word	Meaning
1	Old Irish	uinnius	ash tree
2	Proto-Celtic	osnistū	—
3	Proto-Celtic	osnos	—
4	Proto-Indo-European	h₃es-nos	—

fuinseog — Etymology, Origin & Word History | Etymology Explorer