In some crustaceans: a gill attached directly to the body wall of the thorax, above the base of a thoracic appendage.
Late 19th century; earliest use found in John A. Thomson (1861–1933). From pleuro- + -branch.
英汉双解词典包含464360条英汉词条，基本涵盖了全部常用单词的翻译及用法，是英语学习的有利工具。