Radsimir (Rad'-Si-Mer). [From French ras de St. Maur, cloth of St. Maur] A rich description of dress silk, in the weaving of which a marseilles or cut cashmere effect is produced by dropping a thread of weft at regular intervals, generally from one-sixteenth to one-quarter of an inch apart. This produces a sunken line from side to side of the web, alike on back and face. Between the sunken lines the weave is fine and close, like peau de soi.