to take off the clothes and expose the body, to carry in the girdle
裎 centers on exposing the body by removing clothes, and by extension carrying something in the girdle or waistband against bare skin.
裎 combines the clothing radical 衤 with 呈, which likely contributes the sound. The exact historical development is uncertain, but the character is associated with removing clothes and exposing the body.
The clothing radical 衤 on the left suggests garments. Picture the right side 呈 as a person presenting themselves, so 裎 means taking off clothes to expose the body.
For テイ, imagine taking off a T-shirt to expose the skin: T -> テイ, and the clothing radical 衤 reminds you it's about undressing.