王おう妹まいMeanings1nounking's younger sisterRefers specifically to a younger sister of a king. Not a general term for princess.王おう妹まいは王おうの妹いもうととして、宮きゅう廷ていで重じゅう要ような役やく割わりを果はたした。The king's younger sister played an important role at court as the king's sister.