also: やたば
noun
arrow length
Refers to the length of an arrow, typically in archery contexts. The reading やつか is standard; やづか and やずか are variant readings, with やずか noted as irregular kana usage.
弓道では、自分の矢束に合った矢を使うことが大切だ。
In kyudo, it is important to use arrows that match your arrow length.
noun
bundle of arrows
Only with reading やたば
Refers to a bundle or sheaf of arrows. This sense is restricted to the reading やたば.
戦国時代の絵巻には、矢束を背負った足軽が描かれている。
In picture scrolls from the Warring States period, foot soldiers carrying bundles of arrows are depicted.
Kana spelling for the bundle-of-arrows sense, which is restricted to this reading.
Compound of 矢 (arrow) and 束 (bundle, measure). The reading やつか uses the older counter つか for a hand-width or length, while やたば uses たば (bundle). The exact historical derivation is uncertain.