Where does “ploh₂-no-s” come from?

ploh₂-no-s (Proto-Indo-European) comes from Proto-Indo-European pleh₂- — flat.

Ancestry of “ploh₂-no-s”, step by step

Step	Language	Word	Meaning
1	Proto-Indo-European	pleh₂-	flat

ploh₂-no-s — Etymology, Origin & Word History | Etymology Explorer