Where does “sipunk” come from?

sipunk (Unami) comes from Unami sipu, from Proto-Algonquian si·po·wi — river.

Ancestry of “sipunk”, step by step

StepLanguageWordMeaning
1Unamisipuriver, stream
2Proto-Algonquiansi·po·wiriver
Every word from Proto-Algonquian si·po·wi →Every word from Unami sipu →