1An officially registered seal (inkan) used for important contracts and legal procedures; a seal registered with municipal authorities.
重要な契約には実印が必要だ。
An officially registered seal is required for important contracts.
実印を紛失した場合は市役所で届け出をする必要がある。
If you lose your registered seal, you need to report it to the municipal office.
住宅ローンの契約時に実印と印鑑証明を用意した。
I prepared my registered seal and a seal registration certificate when signing the mortgage contract.