Where does “Po-joki” come from?

Po-joki (Finnish) comes from Finnish joki, from Finnish sokeus, from Finnish sokea, from Proto-Finnic sokeda — blind.

Ancestry of “Po-joki”, step by step

StepLanguageWordMeaning
1Finnishjokiriver
2Finnishsokeusblindness
3Finnishsokeablind
4Proto-Finnicsokedablind
Every word from Proto-Finnic sokeda →Every word from Finnish sokea →Every word from Finnish sokeus →