Definition of silesian:
(adj) :
Of or pertaining to Silesia.
(n) :
(countable) An inhabitant of Silesia.
(n) :
(uncountable) Lower Silesian, a Germanic language or dialect spoken in southwestern parts of what is now Poland (Lower Silesia).
(n) :
(uncountable) Upper Silesian, a West Slavic language spoken in southwestern parts of Poland and the Czech Republic.