grand duchy 
noun
A state or territory ruled by a grand duke or duchess.June 9, 1815, after 400 years of domination by various European nations, Luxembourg was made a grand duchy by the Congress of Vienna....
- Led by William's daughter, the Grand Duchess, the grand duchy cooperated with the Germans in their unlawful violation of Luxembourg's neutrality during World War I.
- Belgium became part of a new kingdom of the Netherlands and then, after 1831, a separate realm in her own right; Luxembourg became an independent grand duchy.
- life rate
- life regiment
- liferent
- liferented
- liferenter
- liferent escheat
- liferentrices
- liferentrix
- liferentrixes
- life ring
- life rocket
- life root
- life-save
- lifesaver
- life-saving
- life savings
- life-saving station
- life science
- life sciences
- life scientist
- life seat
- life's end
- life sentence
- life-size
- life-sized