Wiktionary
n. The territory owned, ruled, or reigned over by a grand duke or grand duchess; contrast (term grand dukedom English).
WordNet
n. the domain controlled by a grand duke or grand duchess
Wikipedia
A grand duchy is a country or territory whose official head of state or ruler is a monarch bearing the title of grand duke or grand duchess. Relatively rare until the abolition of the Holy Roman Empire in 1806, the term was often used in the official name of countries smaller than most continental kingdoms of modern Europe (e.g., Denmark, Spain, United Kingdom) yet larger than most of the sovereign duchies in the Holy Roman Empire, Italy or Scandinavia (e.g. Anhalt, Lorraine, Modena, Schleswig-Holstein). During the 19th century there were as many as 14 grand duchies in Europe at once (a few of which were first created as exclaves of the Napoleonic empire but later re-created, usually with different borders, under another dynasty). Some of these were sovereign and nominally independent ( Baden, Hesse and by Rhine, Mecklenburg-Schwerin, Mecklenburg-Strelitz, Oldenburg, Saxe-Weimar and Tuscany), some sovereign but held in personal union with larger realms by a monarch whose grand-dukedom was borne as a subsidiary title (Finland, Luxembourg, Transylvania), some of which were client states of a more powerful realm ( Cleves and Berg), and some whose territorial boundaries were nominal and the position purely titular ( Frankfurt).
In the 21st century, Luxembourg remains a grand duchy.
Grand Duchy is an American alternative/ electronic/ art rock band formed in 2008 by Black Francis and his wife Violet Clark.
Usage examples of "grand duchy".
She left in 1961 for the Grand Duchy of Venetia and lived in Belluno for about a year.
Sartzanek, perhaps the most capricious and unpredictable of all the magicians, resided at Faroli, deep inside the forest, in the then Grand Duchy of Dahaut.
Faroli, deep inside the forest, in the then Grand Duchy of Dahaut.
It was a few miles outside of Volterra, a town in the grand duchy of Tuscany.
The King of Naples was consolidating his hold on Sicily in the face of a sometimes stiff resistance, and he seemed to have as his next objective the Grand Duchy of Sardinia, which would surely plunge him into a war with Genoa.
Most of the populace of the Grand Duchy of Lithuania and Poland were quite certain that Jagiellon had organized his father's murder in order to usurp the throne.
He had announced to the herald the imminent merger of his lands with the Kingdom of Karaleenos and the Grand Duchy of Kuhmbuhluhn, the resultant state to be called the Confederation of Eastern Peoples, and he offered the sometime Southern Kingdom a equal place in this state.
Prior to the arrival of the tribe, I would, for instance, have felt it safe to say that fully eighty of every hundred swords swung from the South Ehleen lands to the North Ehleen Republic had blades produced in the Kingdom of Harzburk, or the Kingdom of Pitzburk or the Grand Duchy of Bethlemburk!