Darning is a traditional sewing technique used for repairing holes or worn areas in fabric or knitting, typically done by hand or machine. It involves using needle and thread to weave a patch over the damaged area, often with the goal of making the repair as invisible and neat as possible.
Darning differs from other mending techniques such as patching or embroidery in that it aims to replicate the weave of the fabric to cover the hole or worn area invisibly. Darning is often used for knitted items like socks and sweaters, where the fabric has more stretch and can unravel easily.