interstitch noun 1verb 1forms 3 noun1 •area where the stitch is located.As a result of the bending and torsional forces in the inter-stitches, rib fabrics contract once they leave the needles […] — 2011 verb1 •connect things together with stitches to form a single piece.In the interest of greater economy, we intend giving up interstitching the layers of canvas. — 1916 formsinterstitched · interstitching · interstitches