Sentence:  “No, Tom,” I said, “as much as I'd like to, I can't let him bleed.” / “No, I mean you could stitch it up. Mrs. Sullivan <WSD>stitched up</WSD> Wally that time one of the north-side boys laid him open with a chair leg.” / “And what do I know about stitching up heads?” I said. / “It will be just like stitching up clothes, I would imagine,” Tom said. “Any old woman can do that. How hard can it be?” / “And what would you know about stitching up clothes?” I replied sharply. 
Meaning of the word marked with <WSD> tags:  To join or close by sewing.