from The American Heritage® Dictionary of the English Language, 4th Edition
- n. A concealed stitch used for sewing together two layers of fabric, as with hems and facings, made by running the needle through the underside of the lesser piece and through a few threads of the main piece.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. A kind of stitch that is passed from the left needle to the right needle without being knitted.
slip + stitch (Wiktionary)