Sorry, scorpioangel, but neither Chambers or the Oxford dictionaries have STETCH. This is under STITCH in Chambers:
stitch
n a complete movement of the needle in sewing, knitting, surgery, etc; a loop or portion of thread, etc so used; a surgical suture; a mode of stitching or knitting; a fastening with thread or wire through all sections; the least scrap of clothing, sails, etc; a sharp pricking pain in the side brought on by running, etc; a ridge of land; a shock of corn.
vt to join, adorn, or enclose with stitches.
vi to sew.
[OE stice prick; cf stick2]