This rare kanji has no clear standalone meaning. Treat its meaning as uncertain.
The exact historical development of 簄 is uncertain. It visually combines 竹 (bamboo) with 扈, but the original semantic and phonetic roles are unclear.
The top 竹 suggests bamboo, and the bottom 扈 is a complex shape. Without a clear meaning, picture a mysterious bamboo object whose purpose is unknown.
For コウ, imagine a hollow bamboo tube that makes a deep 'koh' sound when blown: koh -> コウ.
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