book lung

noun

: a saccular breathing organ in many arachnids containing thin folds of membrane arranged like the leaves of a book

First Known Use

1881, in the meaning defined above

Time Traveler

The first known use of book lung was in 1881

See more words from the same year

Style

“Book lung.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/book%20lung. Accessed 10 Jun. 2023.

Copy Citation

book lung

noun

: a specialized breathing organ of spiders and related animals

book lung

noun

ˈbu̇k-

: a saccular breathing organ in many arachnids containing thin folds of membrane arranged like the leaves of a book

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