- the territory ruled by an archduke or archduchess
WordReference Random House Unabridged Dictionary of American English © 2026
arch•duch•y
(ärch′duch′ē),USA pronunciation n., pl. -duch•ies.
- Governmentthe domain of an archduke or an archduchess.
- arch-1 + duchy, modeled on French archeduché (now archiduché) 1670–80
Collins Concise English Dictionary © HarperCollins Publishers::
archduchy /ˌɑːtʃˈdʌtʃɪ/ n ( pl -duchies)
'archduchy' also found in these entries (note: many are not synonyms or translations):