Where does “mpësëmahëna” come from?

mpësëmahëna (Unami) comes from Unami pësëm, from Proto-Algonquian *pensenliwa.

Ancestry of “mpësëmahëna”, step by step

StepLanguageWordMeaning
1UnamipësëmTo have something in one's eye; to have a foreign object in one's eye
2Proto-Algonquian*pensenliwa
Every word from Proto-Algonquian *pensenliwaEvery word from Unami pësëm
mpësëmahëna — Etymology, Origin & Word History | Etymology Explorer