This rare kanji has no clear standalone meaning. Treat its meaning as uncertain.
The exact historical development of 蕏 is uncertain. It combines 艹 (grass) with 猪 (boar), but the original meaning and component function are unclear.
With grass 艹 above a boar 猪, imagine a wild boar hiding in tall grass, but the meaning remains uncertain.
For チョ, picture a boar in the grass making a soft 'cho' grunt: cho -> チョ.
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