lung

Either of two spongy, saclike respiratory organs in air-breathing vertebrates, occupying the chest cavity together with the heart and functioning to provide oxygen to the blood while removing carbon dioxide.

A similar organ in some invertebrates, including spiders and terrestrial snails.

(at the top of (one’s) lungs) As loudly as one’s voice will allow.

One of the two spongy or saccular organs, occupying the thorax or upper part of the body-cavity, which communicate with the pharynx through the trachea, and are the organs of respiration in air-breathing vertebrates.

In entomology, one of the respiratory organs peculiar to those Arachnida whose tracheal system is modified into a number of lamellæ superimposed upon one another like the leaves of a book. They are also called pulmonary lamellæ and respiratory leaflets.

In pulmonate mollusks, a modification of the integument subserving aërial respiration: more fully called external lung. Huxley.

plural A bellows-blower; a chemist’s servant.

An organ for aërial respiration; — commonly in the plural.

pneumonia.

a species of gentian (Gentian Pneumonanthe).