Where does “a(w)cúɫo” come from?

a(w)cúɫo (Proto-Armenian) comes from Proto-Armenian anwcúɫ-o-, from Proto-Indo-European h₁ngʷ-ōl-o-.

Ancestry of “a(w)cúɫo”, step by step

Step	Language	Word	Meaning
1	Proto-Armenian	anwcúɫ-o-	—
2	Proto-Indo-European	h₁ngʷ-ōl-o-	—