1. (n.) A form of headdress worn by the ancient Persians. According to Xenophon, the royal tiara was encircled with a diadem, and was high and erect, while those of the people were flexible, or had rims turned over.

2. (n.) The pope's triple crown. It was at first a round, high cap, but was afterward encompassed with a crown, subsequently with a second, and finally with a third. Fig.: The papal dignity.

anklet armlet bangle beads bijou bracelet breastpin brooch cap of dignity cap of maintenance chain chaplet charm chatelaine circle coronet crook crosier crown diadem earring ermine fob gem great seal jewel keys locket miter necklace nose ring orb pallium pastoral staff pin precious stone privy seal purple purple pall red hat regalia rhinestone ring robe of state rod rod of empire royal crown scepter seal signet stickpin stone torque triple crown triple plume uraeus wampum wristband wristlet