Kimosabe was what Tonto called the Lone Ranger. It's supposed to mean something like friend. I suppose you weren't around when the original TV shows aired. I was. I also have the old radio shows. You can find them on Archive.org.

You could be right. I vaguely remember Tonyo shakin his head mumbling Yes kimosabe- The original, not Johnny depps cultural appropriation one. 🤣