coarse pongee, kind of heavy silk
綈 centers on a type of coarse, heavy silk fabric, specifically pongee. It refers to the material itself rather than an abstract concept.
綈 combines 糸 (thread/silk) with 弟, which likely contributes the sound. The character is used for a specific type of silk fabric.
The left side 糸 is thread or silk, and the right side 弟 looks like a younger brother. Imagine a younger brother weaving coarse, heavy silk on a loom: 綈 is that rough pongee fabric.
For テイ, picture a tailor (テイ) working with coarse pongee silk: tailor -> テイ, and the tailor handles the heavy fabric.