This rare kanji has no clear standalone meaning. Treat its meaning as uncertain.
袀 combines the clothing radical 衤 with 匀, which likely contributes sound. The exact historical development is uncertain.
The clothing radical 衤 suggests a garment, but the overall meaning is obscure. Imagine a mysterious uniform with a badge shaped like 匀.
For ビン, picture a soldier's uniform stored in a bin: bin -> ビン, and the clothing radical 衤 hints at the garment.