sleeve length, (kokuji)
裄 centers on the measurement of sleeve length, specifically the distance from the center back of a garment to the cuff. It is a Japanese kokuji created for this tailoring concept.
裄 is a Japanese kokuji formed by combining the clothing radical 衤 with 行, which here likely represents the idea of going or extending, to express the length a sleeve extends from the body.
The clothing radical 衤 on the left shows this is about garments. The right side 行 suggests movement or extension. Picture measuring how far a sleeve extends from the center of a kimono: that's the sleeve length.
For ゆき, imagine a tailor named Yuki who always measures sleeve length perfectly: Yuki -> ゆき, and she extends the measuring tape along the sleeve.
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