This rare kanji has no clear standalone meaning. Treat its meaning as uncertain.
袾 combines 衤 (clothing) with 朱 (vermillion), suggesting a garment-related meaning, but the exact historical development is uncertain.
The left side 衤 suggests clothing, and the right side 朱 is vermillion. Picture a vermillion robe, but remember that the actual meaning is unclear.
For チュ, imagine a vermillion robe worn by a character named Chu: Chu -> チュ.