This rare kanji has no clear standalone meaning. Treat its meaning as uncertain.
傟 combines the person radical 亻 with 翁, which may contribute a sound or meaning, but the exact historical development is uncertain.
A person 亻 beside 翁 (old man) might suggest an elderly person, but the actual meaning is unclear.
For オウ, imagine an old man (翁) saying 'Oh!' (オウ) when he sees the person beside him.