This section is from the "A Complete Dictionary of Dry Goods" book, by George S. Cole. Also available from Amazon: A complete dictionary of dry goods and history of silk, cotton, linen, wool and other fibrous substances,: Including a full explanation of the modern processes ... together with various useful tables.
Picot (Pe'-Ko). [French picot, from pic, a purl or point] A small loop forming part of an ornamental edging, but larger than the purl and thicker, consisting of a thread upon which other thread has been wound, or to which small stitches or knots have been added. When the term is used to designate ribbons it has the same meaning as applied to purl in lace-making - signifying small attached loops or circles.