slip' stitch" Sewing.
a loose stitch taken between two layers of fabric, as on a facing or hem, so as to be invisible on the right side or outside surface, used in stoating.
slip-stitchPronunciation: (slip'stich"), [key]
—v.t., v.i. Sewing.
to sew with slip stitches.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.