Where does the word פיל ("elephant") come from?

I would add that there is another word for elephants in the Bible: )שנהביםII Chron. 9:20, I Kgs. 10:22), which the commentators (like Rashi and Radak) connect to the word שן (“tooth”) because elephant teeth were used for making ivory products.

Rabbi Reuven Chaim Klei