noun
A seal used by an organization or official to authenticate documents, often in formal or bureaucratic contexts.
契約書には会社の奥印が必要です。
The contract requires the company's official seal.
Compound of 奥 (oku, 'inner' or 'back') and 印 (in, 'seal'). The exact historical derivation is uncertain, but the term likely refers to a seal kept in a secure or inner office, emphasizing its official nature.