reel for a spare bowstring
Archaic term for a reel or spool used to hold a spare bowstring. Compare with 弦巻 (つるまき), which refers to a similar item. This word is not used in modern Japanese.
See also: 弦巻
The word 弦袋 appears in old documents.
A 弦袋 was a tool for winding a spare bowstring.
Compound of 弦 (つる, 'bowstring') and 袋 (ふくろ, 'bag'), literally 'string bag'. The exact historical derivation is uncertain, but the term likely referred to a pouch or reel for storing a spare bowstring.