Meanings
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1
noun
a private sleeping cabin on a passenger ship or train
Their stateroom had two bunks and a small window overlooking the sea.
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2
noun
a large formal room in a palace or important residence
The reception moved from the gallery into the palace stateroom.
Thesaurus
Etymology
A compound of state + room. It first referred to a grand room reserved for ceremony or people of high rank, then broadened in travel to a superior private cabin on a ship or train.