Whipstitch Definition Meaning MerriamWebsterSew together is a sewing technique that involves creating small zigzag stitches to tightly fasten two material pieces together. This technique gives strength and avoids the material from unraveling. The overcast is used for a variety of sewing projects, such as finishing the edge, stitching appliques, or even creating quilts. It offers a tidy and professional look to the finished product.