noun · an official seal used by an emperor, monarch, or high-ranking government authority to symbolize power and authenticate documents

这枚玉制的印玺象征着至高无上的皇权。

noun · a formal proclamation or edict issued by the Pope, or the leaden seal (bulla) used to authenticate such documents

教宗在那份古老的诏书上盖上了神圣的印玺。