slip stitch

from WordNet (r) 3.0 (2006)

slip stitch
    n 1: a loose stitch catching only a thread or two of fabric;
         designed to be invisible from the right side

from The Collaborative International Dictionary of English v.0.48

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]

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