From the Slavic element milŭ meaning "gracious, dear", originally a short form of names that began with that element. It was originally used in Czech, Slovak, and the South Slavic languages, though it has recently become popular elsewhere in Europe.A city in Italy bears this name, though in this case it originates from Latin Mediolanum, perhaps ultimately of Celtic origin meaning "middle of the plain". In some cases the city name may be an influence on the use of the given name.