A wing needle is used in heirloom sewing. It is bigger than an ordinary needle like it has wings on the sides. It makes a tiny hole in the fabric and I use one of my decorative stitches along with it. It makes beautiful trim on baby and girls dresses. If you have heard of Martha Pullen and Sew Beautiful Magazine, she illustrates that technique. I am not connected with her or her business but love her TV shows on PBS.