Where does “hulpioreuna” come from?

hulpioreuna (Finnish) comes from Finnish reuna, from Proto-Finnic reuna — edge.

Ancestry of “hulpioreuna”, step by step

hulpioreuna traces back through two separate lines of ancestry.

via Finnish reuna

StepLanguageWordMeaning
1Finnishreunarim; brink, edge, border; boundary
2Proto-Finnicreunaedge

via Finnish hulpio

StepLanguageWordMeaning
1Finnishhulpioselvage edge of a woven fabric, where the weft threads run around the warp, creating a finished edge
Every word from Proto-Finnic reunaEvery word from Finnish reuna