A serger is a specialized sewing machine designed to create professional-looking seams and finish edges on fabric. It uses multiple threads to stitch and overlock the fabric edges simultaneously, preventing fraying and providing a clean finish. This makes it a popular choice for sewing knit fabrics and garments. Unlike a traditional sewing machine, a serger can sew, trim, and overcast in one step, significantly speeding up the sewing process. Many sergers also come with various stitch options, allowing for versatility in sewing projects. They are commonly used in both home sewing and the garment industry for efficient construction of clothing.