Real Dictionary

lung
a cell in connective tissue that synthesizes collagen [...]
a malignant tumour originating in glandular tissue [...]
a small simple room, as in a prison, convent, or monastery; cubicle [...]
an animal tissue consisting of one or more layers of closely packed cells covering the external and internal surfaces of the body. The cells vary in structure according to their function, which may be protective, secretory, or absorptive [...]
any type of malignant growth or tumour, caused by abnormal and uncontrolled cell division: it may spread through the lymphatic system or blood stream to other parts of the body [...]
either one of a pair of spongy saclike respiratory organs within the thorax of higher vertebrates, which oxygenate the blood and remove its carbon dioxide [...]
general appearance or outline [...]
the formation of an abnormal amount of fibrous tissue in an organ or part as the result of inflammation, irritation, or healing [...]
the spreading of a disease, esp cancer cells, from one part of the body to another [...]
Your lungs are the two organs inside your chest which fill with air when you breathe in.