'Suture' is Latin for 'a sewing' — from PIE *syuh- (to sew). Kin to 'couture' and everyday 'sew.'
A stitch or row of stitches holding together the edges of a wound or surgical incision.
From Latin 'sūtūra' (a seam, a sewing together, a joint), from 'sūtus,' past participle of 'suere' (to sew, to stitch), from PIE *syuh₁- (to sew, to stitch, to bind with thread). The PIE root is remarkably well preserved across the family: Sanskrit 'sīvyati' (he sews), Greek 'hymen' (ὑμήν, membrane — something sewn or woven together), Old English 'sēowan' (to sew, whence modern 'sew'), and Old Norse 'sýja' (to sew) all descend from it. A suture is literally 'a sewing' — the surgical art of closing wounds