Land that belongs to the Crown WordNet 3.0 & Open English WordNet

Crown land, also known as royal domain, is a territorial area belonging to the monarch, who personifies the Crown. Wikipedia

Territory belonging to a monarch Wikidata

In Britain and some Commonwealth countries, land that is owned by the state, nominally titled to the reigning King or Queen of England, and whose use and disposition is controlled by a government within that Commonwealth country or by an official representative of the monarch. Wiktionary

Land owned by the state. Wiktionary (translation)