Meaning of “archduke” in the English Dictionary

british dictionary

"archduke" in British English

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archdukenoun [ C ]

uk /ˌɑːtʃˈdʒuːk/ us /ˌɑːrtʃˈduːk/

a man of very high rank, especially in the past in the Austrian royal family:

The assassination of the Archduke Ferdinand started off the First World War.

(Definition of “archduke” from the Cambridge Advanced Learner’s Dictionary & Thesaurus © Cambridge University Press)