masc. proper name, from Medieval Latin Venceslaus (modern Czech Vaclav), from Old Czech Veceslavŭ, literally "having greater glory," from Slavic *vetye- "greater" + *-slavu "fame, glory," from PIE *klou-, from root *kle- "to hear" (see listen).[Wenceslas etymology, Wenceslas origin, 英语词源]