Vatican
/ˈvætɪkən/noun
(一般作the Vatican)
1- the palace and official residence of the Pope in Rome梵蒂冈（罗马教皇皇宫及府邸所在地）。
1.1
- treated as sing. or pl. the administrative centre of the Roman Catholic Church罗马教廷。
词源
mid 16th cent.: from French, or from Latin Vaticanus, the name of a hill in Rome.