Definition of archduchess noun from the Oxford Advanced Learner's Dictionary

 

archduchess

 noun
noun
BrE BrE//ˌɑːtʃˈdʌtʃəs//
 
; NAmE NAmE//ˌɑːrtʃˈdʌtʃəs//
 
 
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(in the past) the wife of an archduke or a daughter of the Emperor of Austria
See the Oxford Advanced American Dictionary entry: archduchess