This rare kanji has no clear standalone meaning. Treat its meaning as uncertain.
僀 combines 亻 (person) with 帶, which likely contributes a phonetic role. The exact historical development is uncertain.
A person 亻 beside 帶, a shape associated with a belt or sash. Without a clear meaning, picture a person wearing a distinctive sash, but remember the meaning is uncertain.
For テイ, imagine a person tying a sash: tie -> テイ, and the person 亻 adjusts the 帶 sash.