plural lungs
: either one of the two organs that people and animals use to breathe air
He filled his lungs with the clean. fresh air.
lung disease/cancer
She shouted at the top of her lungs. [=she shouted as loudly as possible]
Cite this Entry
“Lung.” Merriam-Webster.com Simple Definition, Merriam-Webster, https://www.merriam-webster.com/simple/lung. Accessed 20 Jun. 2026.
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