​A long wrapped knot used singly to embellish designs or in groups to produce a textural filling stitch.

The earliest evidence we have for bullion knots is from the 16th century, where they were used in both English embroidery and Italian cutwork.  Guimarães embroidery from Portugal also used bullion knots as one of its signature stitches; the technique dates from the 10th century, but it is unknown at what point bullion knots started to be used.  By the 17th century bullion knots were becoming more widely used: a Portuguese stitched sample book held by the Metropolitan Museum in New York includes bullion knots, as do extant pieces of English stumpwork.  Bullion knots are listed as one of the stitches used in ‘sampler schools’ in the United States until the mid 19th century.