ARCHDUKE
Meaning of ARCHDUKE in English
arch ‧ duke /ˌɑːtʃˈdjuːk◂ $ ˌɑːrtʃˈduːk◂/ BrE AmE noun [countable]
a prince who belonged to the royal family of Austria
Longman Dictionary of Contemporary English.
Longman - Словарь современного английского языка.
2012