書しょ冊さつしょさつMeanings1nounbook; volumeFormal, literary word for a book or collection of books. Often used in bibliographic or academic contexts. In modern casual Japanese, 本 or 書籍 is preferred.彼かれの書しょ斎さいには多おおくの貴き重ちょうな書しょ冊さつが並ならんでいる。Many valuable books are lined up in his study.