The phrase "to puncture a lung" means to accidentally or intentionally create a hole or a tear in the lung tissue. This can lead to serious breathing difficulties, chest pain, and potentially life-threatening situations. Full definition
Naturally headshots tend to score the most, especially if the shot was taken over a great distance, but the game also recognizes other types of death, such as puncturing lungs, liver shots and, brilliantly, testicle shots. (wolfsgamingblog.com)
He nearly died of internal bleeding in April 1999 after puncturing a lung in a game against the Predators and not telling team doctors about the severity of his chest pain. (si.com)
After just four days in the hospital — during which doctors successfully stopped Tom's internal bleeding from punctured lungs and set his broken bones — he was discharged. (discovermagazine.com)