archduke(redirected from Erzherzog)
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1. In certain royal families, especially that of imperial Austria, a nobleman having a rank equivalent to that of a sovereign prince.
2. Used as a title for such a nobleman.
[Obsolete French archeduc : arche-, arch- (from Old French; see arch-1) + duc, duke (from Old French; see duke).]
(Government, Politics & Diplomacy) a chief duke, esp (since 1453) a prince of the Austrian imperial dynasty
a title of the sovereign princes of the former ruling house of Austria.