noun
portable brush-and-ink case
Historical writing accessory carried by samurai and travelers; a compact case combining a brush and ink container.
江戸時代の武士は矢立を腰に差して旅をした。
Edo-period samurai traveled with a portable brush-and-ink case tucked at their waist.
In kyudo practice, one draws an arrow from the quiver.
More common modern term for an arrow quiver; 矢立 is an older or more formal archery term.
Compound of 矢 (arrow) and 立 (stand/container). The exact historical derivation is uncertain, but the kanji suggest a container for arrows, later extended to a portable writing case.