lung

noun3

1. •
   one of the two parts inside the chest that take in air and pass part of it into the blood
2. •
   That which supplies oxygen or fresh air, such as trees, parklands, forest, etc., to a place.
3. •
   [in the plural] Capacity for exercise or exertion; breath.

   • He no longer has the lungs to play long rallies like he used to.