decoration
縟 centers on elaborate ornamentation, especially in textiles or patterns. The single given meaning 'decoration' points to rich, detailed embellishment.
縟 combines 糸 (thread) with 辱, which likely contributes the sound and may relate to the idea of thick, layered decoration. The exact historical development of 辱 in this context is uncertain.
The left side 糸 suggests thread or fabric. Picture richly embroidered silk with dense, decorative patterns: 縟 is elaborate decoration.
For ジョク, imagine a decorative jacquard loom weaving intricate patterns: jacquard -> ジョク, and the threads create lavish ornamentation.