書しょ笈きゅう

noun

wooden backpack bookcase; book-carrying box

Archaic term for a wooden box or case used to carry books on one's back, similar to a portable bookcase. Not used in modern Japanese; encountered only in historical contexts.

• 江え戸ど時じ代だいの学がく者しゃは書しょ笈きゅうを背せ負おって旅たびをした。

  Scholars in the Edo period traveled with a wooden book-carrying box on their backs.