This rare kanji has no clear standalone meaning. Treat its meaning as uncertain.
侞 combines the person radical 亻 with 如, which likely contributes sound. The exact historical development and original meaning are uncertain.
A person 亻 beside 如, a shape associated with likeness or similarity. Without a clear meaning, picture a person trying to resemble something, but the exact idea is unclear.
For ジョ, imagine a person named Joe standing beside the 如 component: Joe -> ジョ.