This rare kanji has no clear standalone meaning. Treat its meaning as uncertain.
蕠 combines the grass radical 艹 with 絮, but the exact historical development and original meaning are uncertain.
The top 艹 suggests a plant, and the bottom 絮 looks like tangled threads. Picture a plant with fibrous, thread-like parts, but its exact meaning is unclear.
For ジョ, imagine a tangled plant that looks like a messy 'jo' (short for 'jumble'): jo -> ジョ.
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