While on the subject of words with Arabic etymological roots, my personal favourite is Betelgeuse. The Arabic name of the star is يد الجوزاء (yad al-Jauzā) which means "the hand of the Jauzā". But after a few medieval translation it got morphed into it's current name. Which, unfortunately, ended up sounding like, and often back translated as, ابط الجوزاء -- literally "the armpit of the Jauzā"!