splashed dye pattern, reel, skein, (kokuji)
綛 centers on thread-related items: a reel or skein for winding thread, and a splashed dye pattern created during thread dyeing. It is a kokuji, so its meanings are specific to Japanese textile contexts.
綛 is a kokuji (Japanese-made kanji) combining 糸 (thread) with 忍, which likely contributes a phonetic element related to the reading かせ or かすり. The exact historical development is uncertain.
The left side 糸 is thread. The right side 忍 suggests enduring or patience. Picture a patient weaver enduring the long process of winding thread onto a reel, or carefully creating a splashed dye pattern on the thread.
For かせ, imagine a reel of thread that is a 'case' for holding the skein: case -> かせ. The thread is wound neatly into its case-like reel.
—
hank; skein; reel