lung

Definitions

General English

General Science

  • noun the organ of respiration of vertebrates that breathe air
  • noun an organ for breathing air in invertebrate animals, positioned in the highly vascular region of the mantle cavity in some terrestrial snails

Medical

  • noun one of two organs of respiration in the body into which air is sucked when a person breathes
http://www.dictionarycentral.com/definition/lung.html