Crewel is a type of embroidery that uses wool YARN and a special stitch to create intricate designs. It is a form of free-style surface embroidery that originated in the 16th century and has been popular ever since. Crewel work requires skill and patience, as the stitches must be even and precise. The two crossword solutions for the term CREWEL are YARN (4 letters) and SEWS (4 letters). YARN refers to the type of wool used in crewel embroidery, while SEWS refers to the stitching technique used to create the designs.