book lung


noun

the respiratory organ of a spider, scorpion, or other arachnid, composed of thin, membranous structures arranged like the leaves of a book.

Origin of book lung

First recorded in 1895–1900

Scientific definitions for book lung

book lung
[ buk ]

The breathing organ of scorpions, spiders, and some other arachnids. It consists of membranes arranged in several parallel folds like the pages of a book.