| book lung | (n) organ in many arachnids containing many thin folds of membrane resembling the leaves of a book |
| 書肺 | [しょはい, shohai] (n) book lung (arachnid respiratory organ) [Add to Longdo] |
| 肺書 | [はいしょ, haisho] (n) (obsc) (See 書肺) book lung (arachnid respiratory organ) [Add to Longdo] |