- the chief residence of the popes in Vatican City, now also including a library, archives, art museum, apartments, and administrative offices.
- the authority and government of the pope (distinguished from the Quirinal).
- the palace of the popes in Rome and their principal residence there since 1377, which includes administrative offices, a library, museum, etc, and is attached to the basilica of St Peter's
- (as modifier)
- the authority of the Pope and the papal curia
- (as modifier)
