ELI5: Explain Like I'm 5

Romanus Pontifex

Romanus Pontifex is a Latin phrase that means "Roman Pontiff." It was used in old records to refer to the Pope, who was the leader of the Catholic Church. The Pope was the most important person in the Catholic Church, so he was given the special title, Romanus Pontifex, which means "the one who connects Rome to God."