shako (n.)youdaoicibaDictYouDict[shako 词源字典]
cylindrical soldier's hat with plume, 1815, from Hungarian csákó, short for csákós süveg "peaked cap," from adjectival form of csáko "peak, projecting point of a cow's horn," which some European etymologists derive from German zacken "point, spike," but which Hungarian sources regard as of unknown origin.[shako etymology, shako origin, 英语词源]