The name of the pope's triple crown. The tiara and keys are the badges of the papal dignity, the tiara of his civil rank, and the keys of his jurisdiction; for as soon as the pope is dead, his arms are represented with the tiara alone, without the keys. The ancient tiara was a round high cap. John XIII. first encompassed it with a crown. Boniface Viii. added a second crown; and Benedict XII. a third.