Stitch over is a sewing technique that involves the use of a needle and thread to join two pieces of fabric together. The term 'stitch over' can also refer to the process of resewing or reseaming, which is the act of stitching over an existing seam in order to reinforce it. Resewing is done by hand with a needle and thread, while reseaming is done with a sewing machine. Both techniques are used to strengthen seams and ensure that garments last longer.