伤口 (shāngkǒu) is the everyday word for a visible wound or cut on the body, like a cut, scrape, or surgical incision. It's more specific than 伤 (shāng), which is a broader term for any injury (physical or abstract), and different from 伤痕 (shānghén) 'scar' or 疤 (bā) 'scar', which refer to the mark left after healing.