This rare kanji has no clear standalone meaning. Treat its meaning as uncertain.
儴 combines 亻 (person) with 襄, which likely contributes the sound. The exact historical development is uncertain.
A person 亻 beside 襄, a complex component. Without a clear meaning, picture a person lost in a maze of strokes, wandering aimlessly.
For ショウ, imagine a person 亻 showing 襄 a map while wandering: show -> ショウ.