Where does “der-drew-” come from?
der-drew- (Proto-Indo-European) comes from Proto-Indo-European dóru, from Proto-Indo-European drew- — hard, firm, strong, solid; hard, fast; tree.
der-drew- (Proto-Indo-European) comes from Proto-Indo-European dóru, from Proto-Indo-European drew- — hard, firm, strong, solid; hard, fast; tree.