Cambridge Dictionaries online Cambridge Dictionaries online

The most popular online dictionary and thesaurus for learners of English


English definition of “iron lung”

iron lung

noun [C]    
a machine with a large metal tube that pushes air in and out of someone's lungs to help them when they find it difficult to breathe because of an illnessMedical and surgical equipment
(Definition of iron lung noun from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)
Focus on the pronunciation of iron lung

Translations of “iron lung”

Word of the Day

limber up

to do gentle exercises to stretch the muscles in order to prepare the body for more active physical exercise

Word of the Day


Read our blog about how the English language behaves.

Learn More

New Words

Find words and meanings that have just started to be used in English, and let us know what you think of them.

Learn More