large seal; large stamp
Refers to a physically large seal or stamp, often used historically or in ceremonial contexts.
Feudal lords of the past affixed a large seal to documents.
seal of approval; guarantee; endorsement
Figurative use: a strong guarantee or endorsement, as if stamped with a large seal. Common in phrases like 太鼓判を押す (to give a firm guarantee).
Experts have given this product their seal of approval.
I can vouch for his ability.