Archduchess
/ˌɑːrtʃˈdʌtʃəs/
Definition 1 of 1
Pro Tip 1/3Historical Context
Used in historical or period contexts, often related to European aristocracy. 
A film set in the 18th century featured a prominent archduchess character.
Pro Tip 2/3Noble Ranks
Indicates high nobility rank, just below an empress in Austria's abolished system. 
Princess Elisabeth became an archduchess upon her marriage.
Pro Tip 3/3Specific Usage
Mainly associated with Austrian nobility, not a common title elsewhere. 
The title of archduchess was unique to the Austrian empire.