rags
繿 centers on worn, tattered cloth: rags. The single meaning is concrete and narrow.
繿 combines 糸 (thread) with 監, which likely contributes the sound. The character is used for rags or tattered cloth, but the exact historical development is uncertain.
The left side 糸 is thread, and the right side 監 suggests watching or inspecting. Imagine inspecting a piece of cloth so worn that only a few threads remain: it's nothing but rags.
For ラン, picture a pile of rags that has been run over by a cart: run -> ラン, and the rags are even more tattered.