Noun
camerlengo (plural camerlengos)
The cardinal who administers the Roman Catholic Church in the interregnum between Popes.
He also served as Camerlengo of the Sacred College of Cardinals from 1716 to 1717 and resigned his position in his diocese due to illness in 1719. Source: Internet
Canon law prohibits the College and the Camerlengo from introducing any innovations or novelties in the government of the Church during this period. Source: Internet