Where does “airchenn” come from?

airchenn (Old Irish) comes from Old Irish cenn, from Proto-Celtic Kʷennowindos, from Proto-Celtic windos, from Proto-Indo-European windo-, from Proto-Indo-European weyd- — to see.

Ancestry of “airchenn”, step by step

Step	Language	Word	Meaning
1	Old Irish	cenn	head; end
2	Proto-Celtic	Kʷennowindos	—
3	Proto-Celtic	windos	white
4	Proto-Indo-European	windo-	—
5	Proto-Indo-European	weyd-	to see

Every word from Proto-Indo-European weyd- →

airchenn — Etymology, Origin & Word History | Etymology Explorer