Wen·ce·slas also Wen·ce·slaus (wěn'sĭ-slôs') Duke of Bohemia who encouraged Christianization and was martyred by his brother Boleslav. He is popularly associated with Christmastide charity and is the patron saint of Bohemia.
masc. proper name, from M.L. Venceslaus (modern Czech Vaclav), from O.Czech Veceslavu, lit. "having greater glory," from Slavic *vetye- "greater" + *-slavu "fame, glory," from PIE *klou-, from base *kle- "to hear" (see listen).