knotted letter
Archaic term for a letter tied in a knot, used in historical contexts. Compare with 結び状.
See also: 結び状
Ancient documents record examples of knotted letters being used as love letters.
Compound of 結び (musubi, 'tying, knotting') and 文 (fumi, 'letter, writing'), with rendaku voicing to ぶみ.