official seal; government seal
Refers to a seal or stamp used by a government office or official for authentication. Not used for personal seals (印鑑/はんこ).
公文書には官印が押されている。
The official document bears the government seal.
Compound of 官 (government, official) and 印 (seal, stamp). The exact historical derivation is uncertain, but the word has been used in administrative contexts for centuries.