To Stitch

1. To form stitches in; especially, to sew in such a manner as to show on the surface a continuous line of stitches.
2. To sew, or unite or attach by stitches.
3. (intransitive) To practice/practise stitching or needlework.
4. (agriculture) To form land into ridges.
5. To weld together through a series of connecting or overlapping spot welds.
6. (computing, graphics) To combine two or more photographs of the same scene into a single image.
7. (more generally) To include, combine, or unite into a single whole.

(form stitches in): sew

(unite by stitches): sew, sew together, stitch together

(form land into ridges): plough (British), plow (US)