book lung
- noun
- /bʊk lʌŋ/
- Specialized
- Since he doesn't get an exo-skeleton, trachea, book-lungs, or extra appendages, I don't really see the problem with the spinnerets being placed in his palms.
Examples
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Spiders use their book lungs to efficiently absorb oxygen from the air.
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The scientist explained how the book lungs in certain arachnids allow them to breathe in dry environments.
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In many arachnids, the book lungs are crucial for respiration, helping them survive in various habitats.
Surface Forms
Morphology
book + lung
The noun 'lung' clearly signals a respiratory organ, while 'book' is used metaphorically to describe the thin, page-like folds of the structure. A B1 learner who knows both words could reasonably infer a lung with layered, leaf-like pages, but the anatomical metaphor and specific sense are not fully predictable without exposure, so it is only partially transparent.
Etymology
Book lung may come from the thin, leaf-like folds inside some spiders and scorpions that look like the pages of a book and work like a lung to help them 'breathe'. So the name gives a clear picture and helps you remember it means a 'breathing organ' made of many page-like layers.