This rare kanji has no clear standalone meaning. Treat its meaning as uncertain.
妕 combines 女 (woman) with 中 (middle), but the exact historical development and original meaning are uncertain.
A woman 女 standing in the middle 中 of a room, but her purpose is unclear. The kanji's meaning is uncertain.
For チュウ, imagine the woman in the middle chewing gum: chew -> チュウ, and she stands in the center.