BACKSTITCH is validvalid

to sew with overlapping stitches [v BACKSTITCHED, BACKSTITCHES, BACKSTITCHING]

121,683 of 196,601 in NWL2023·also valid in CSW24

a stitch made by setting the needle back of the end of the last stitch, and bringing it out in front of the end [n -ES] / to stitch in this way [v -ED, -ING, -ES]