yìn​xǐ

imperial seal

印玺 (印璽) yìn​xǐ
imperial seal noun
an official seal used by an emperor, monarch, or high-ranking government authority to symbolize power and authenticate documents
papal bull noun
a formal proclamation or edict issued by the Pope, or the leaden seal (bulla) used to authenticate such documents

Frequency

Written text
0.083 per million

Sources

Definitions
CC-CEDICT
Frequency data
BCC Corpus (BLCU)