The term 'PERTAINING TO THE HOLY SEE' can be summed up by the crossword solution 'PAPAL, ' which is an adjective meaning 'of or relating to the pope, the bishop of Rome, or the Roman Catholic Church.' The Holy See is the central governing body of the Roman Catholic Church and is located in Vatican City. The pope is the leader of the Holy See and is considered to be the spiritual leader of the Roman Catholic Church. The term 'Papal' is used to refer to anything related to the pope, the Holy See, or the Roman Catholic Church.