"Potawatomis" Natural Recordings by Native Speakers
Potawatomi is a Native American people inhabiting the North the US, primarily in Michigan and Wisconsin. The name "Potawatomi" comes from an Ojibwe word " Bodéwadmik", meaning "people of the place of the fire".
I couldn't find any meaning or definition for the word "potassoxyl". It's possible that it's a made-up or non-existent word, or it could be a misspelling or variation of a different word.