Encyclopedia article defining yarn as any textile fibre spun for weaving, and describing single, folded and fancy yarns. It compares cotton, linen, woollen, worsted and silk yarns (including waste yarns such as shoddy and mungo) and gives the count systems used for each fibre. It also covers folded yarns for sewing, lace, crochet and hosiery, and fancy yarns such as grandrelle, flaked, corkscrewed, gimp, knopped and curled.