pleurobranch
/ˈplʊərə(ʊ)braŋk/ /ˈplɔːrə(ʊ)braŋk/Zoology
noun
In some crustaceans: a gill attached directly to the body wall of the thorax, above the base of a thoracic appendage.
Origin
Late 19th century; earliest use found in John A. Thomson (1861–1933). From pleuro- + -branch.