topstitch

noun
  1. 1

    A sewing technique, most often used on garment edges such as necklines and hems, where it helps facings to stay in place and gives a crisp edge.

  2. 2

    An individual stitch of this kind.

verb
  1. 1

    To stitch in this fashion.

Source: https://en.wiktionary.org/wiki/topstitch