archduke

[ ahrch-dook, -dyook ]
/ ˈɑrtʃˈduk, -ˈdyuk /

noun

a title of the sovereign princes of the former ruling house of Austria.

Origin of archduke

1520–30; earlier archeduke < French archeduc (now archiduc). See arch-1, duke
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

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British Dictionary definitions for archduke

archduke

/ (ˈɑːtʃˈdjuːk) /

noun

a chief duke, esp (since 1453) a prince of the Austrian imperial dynasty
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012