'slip stitch' definitions:

Definition of 'slip stitch'

From: WordNet
noun
A loose stitch catching only a thread or two of fabric; designed to be invisible from the right side

Definition of 'slip stitch'

From: GCIDE
  • slip stitch \slip stitch\ n. loose stitch catching only a thread or two of fabric, designed to be invisible from the right side. [WordNet 1.5]