Where does “cúlaí” come from?

cúlaí (Irish) comes from Irish cúl, from Old Irish cúl, from Proto-Celtic kūlos, from Proto-Indo-European ḱuH-ló-, from Proto-Indo-European (s)kewH- — to cover, bedeck; cover.

cúlaí (Irish): back

Definitions

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Ancestry of “cúlaí”, step by step

Step	Language	Word	Meaning
1	Irish	cúl	behind; back; goal
2	Old Irish	cúl	back; rear
3	Proto-Celtic	kūlos	corner
4	Proto-Indo-European	ḱuH-ló-	—
5	Proto-Indo-European	(s)kewH-	to cover, bedeck; cover

Words derived from “cúlaí”

lánchúlaí
leathchúlaí
cowlee

Every word from Proto-Indo-European (s)kewH- →Every word from Proto-Indo-European ḱuH-ló- →Every word from Proto-Celtic kūlos →