palace annex; shrine annex; separate hall
Refers to a detached building within a palace or shrine complex, often used for specific ceremonies or as auxiliary space.
The Shinto ritual was performed in the annex, not in the main shrine building.
Several detached halls are scattered around the imperial villa.
Compound of 別 (separate) and 殿 (palace, hall). The exact historical derivation is uncertain, but the word follows a common Sino-Japanese pattern for architectural terms.