noun
papal triple tiara
Refers specifically to the three-tiered crown historically worn by popes, symbolizing the papacy's triple authority.
バチカン美術館には、かつて教皇がかぶった三重宝冠が展示されている。
The Vatican Museums display a papal triple tiara once worn by a pope.
Compound of 三重 (さんじゅう, 'triple') and 宝冠 (ほうかん, 'precious crown'), directly describing the three-tiered papal tiara.