Derived from an older form maglaj, according to Bosnian toponym Maglaj, where several battles took place when Austro-Hungarian started to rule Bosnia and Herzegovina.[1]
^ Hugo, Jan et al., editors (2020), “maglajz”, in Slovník nespisovné češtiny:argot, slangy a obecná mluva od nejstarších dob po současnost. Historie a původ slov, 4th edition, Prague: Maxdorf, →ISBN