Wow, I learned something today. Quoting from Wikipedia (https://simple.wikipedia.org/wiki/Bishop_(chess)):
The bishop first appeared in that form in medieval European chess. In Chaturanga he was represented as an armed attendant who sat on the back of an elephant. The Arabs called this figure "al-fil", which means "elephant". The problem was that in Central Europe elephants were not known, so they could not recognize the figure. The bishops were interpreted differently by the different nations. That is why the bishop is a "Läufer" (runner) in Germany, a "fou" (fool) in France and a "alfiere" (standard-bearer) in Italy.