Definition of book lung in English:

book lung

Syllabification: book lung

noun

Zoology
(In a spider or other arachnid) each of a pair of respiratory organs composed of many fine leaves. They are situated in the abdomen and have openings on the underside.
More example sentences
  • Most spiders breathe through tracheae; some, like the wolf spiders, have both book lungs and tracheae.
  • Like spiders, they were terrestrial and respired through book lungs, and walked on eight legs.
  • Respiration takes place through the body surface, and/or by means of gills, tracheae, or book lungs.

Definition of book lung in:

Get more from Oxford Dictionaries

Subscribe to remove ads and access premium resources

Word of the day ween
Pronunciation: wēn
verb
be of the opinion; think or suppose