woollen fabric which is somewhat sharper to the touch, with striking twill ribbing. Typically in three-end warp twill weave; in a heavier rendering in four-end reversible twill. Produced commonly from worsted yarns from sharper cheviot wool, in a one-colour or melange rendering. Used for ladies' dresses, suits, trousers and skirts. The name is given by the Latin "serica" (= silk), although an alternative etymology is through the Spanish erga(= a light shawl or blanket).