This rare kanji has no clear standalone meaning. Treat its meaning as uncertain.
幉 combines 巾 (cloth) with 枼, which likely contributes a phonetic element. The exact historical development is uncertain.
The left side 巾 suggests cloth, and the right side 枼 looks like a leaf or document. Imagine a cloth tag or label attached to a document, but the exact meaning is unclear.
For たづな, imagine a cloth tag with the word 'tazuna' written on it, like a name label: たづな is the reading, and the cloth 巾 holds the tag.