noun. The territory over which an archduke or an archduchess has authority.

noun. The territory or rank of an archduke or archduchess.

noun. The territory of an archduke or archduchess.

noun. The territority (principality) of an archduke

noun. The archduchies Austria and Brabant (as well as its rival Gelre) claimed this rare, primordial vassalitic rank as the successors to the former Carolingian kingdom and first archduchy Lotharingia (the name later became Lorraine), which had been divided in an Upper - and a Lower dukedom within the Holy Roman Empire

noun. the domain controlled by an archduke or archduchess

"[Sidenote: Austria created an archduchy.] were equally unfortunate under the rule of Frederick and Albert; and the death of Ladislaus led to still further complications."

grand duchy  

archducal  archdukedom  

demesne  domain  land