Shen Collection, Lower Volume
Radical: Clothing (yī)
Character: 袘
Kangxi Strokes: 11
Page 1114, Entry 20
Collected Rhymes (Jiyun) states it is pronounced yi.
Categorized Dictionary (Leipian) states the middle part of a garment is called yi.
Rhyme Collection (Yunhui) states it is pronounced yi (falling tone). It refers to the edge of the hem of a garment.
Ceremonial and Rituals (Yili), Rules for the Wedding of a Scholar: The host wears a cap of honor with a light red lower garment trimmed with a black edge.
Commentary: Yi refers to the trim of a garment. The meaning of yi is like bestowing, using black to trim the lower garment, symbolizing the downward distribution of yang energy.
It also refers to a sleeve.
Sima Xiangru, Rhapsody on the Master of Void (Zixu fu): Lifting the sleeves, the edges are straight and sharp. Sometimes also written in a variant form (zhuàn).