A 32-year-old man is brought to the emergency department following an altercation. He has a single wound over the left anterior chest wall, 4 cm in length, with clean, sharp edges and minimal tissue loss. The wound edges are gaping slightly. On examination, there is blood oozing from the wound but no active spurting. The patient is conscious and hemodynamically stable. The wound tract appears to penetrate the intercostal muscles. What is the most likely type of wound, and what is the key distinguishing feature?