収しゅう蔵ぞう庫こ

noun

storage room; repository

Often used for a dedicated room or building where valuable items such as artworks, documents, or museum pieces are stored and preserved.

• 美び術じゅつ館かんの収しゅう蔵ぞう庫こには、普ふ段だんは展てん示じされていない作さく品ひんがたくさん保ほ管かんされている。

  In the museum's storage room, many works that are not normally exhibited are kept.