grand duke
noun/ˌɡrænd ˈdjuːk/
/ˌɡrænd ˈduːk/
- (in some parts of Europe, especially in the past) a male leader of a small independent state
大公 - The Grand Duke of Tuscany
托斯卡纳大公
- The Grand Duke of Tuscany
- (in Russia in the past) a son of the tsar
王子