Where does “*piːᴬ¹” come from?

*piːᴬ¹ (Proto-Southwestern Tai) comes from Proto-Tai piːᴬ — year.

Ancestry of “*piːᴬ¹”, step by step

Step	Language	Word	Meaning
1	Proto-Tai	piːᴬ	year

*piːᴬ¹ — Etymology, Origin & Word History | Etymology Explorer