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

Nuttall's Standard dictionary of the English language By Nuttall, P.Austin

• zrchduchy,
• srchduchy,
• wrchduchy,
• qrchduchy,
• aechduchy,
• adchduchy,
• afchduchy,
• atchduchy,
• a5chduchy,
• a4chduchy,
• arxhduchy,
• arvhduchy,
• archeduchy,
• archduch,
• arshduchy,
• Archduchie,
• Archeducy,
• Archedushy,
• Archducky,
• Aarcheduchy

• archdiocese,
• archducal,
• archduke,
• archduchess,
• archdeacon,
• archdeaconry,
• arched.

The adjective form of the word "archduchy" is "archducal".

The plural of the "archduchy" can be the "archduchies".

The singular of the "archduchy" can be the "archduchy".