lining at the bottom of a kimono
Refers to the inner lining attached to the lower hem area of a kimono, often a contrasting or protective fabric.
The lining at the bottom of this kimono uses a dark-colored fabric so that dirt doesn't show easily.
Compound of 裾 (すそ, 'hem' or 'bottom edge of a garment') and 回し (まわし, 'wrapping around' or 'lining'). The exact historical derivation is uncertain, but the term transparently describes a lining that goes around the hem area.