This rare kanji has no clear standalone meaning. Treat its meaning as uncertain.
The exact historical development of 徢 is uncertain. It visually combines 彳 (step) with 疌, but the original semantic or phonetic role of 疌 in this character is unclear.
With no clear meaning, picture the left side 彳 as a path and the right side 疌 as a quick movement, but treat the overall meaning as unknown.
For ショウ, imagine a person on a path (彳) giving a quick show (ショウ) of movement, but remember the meaning is uncertain.
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