: a gill attached to the basal segment of a thoracic limb of a crustacean — compare arthrobranch, pleurobranch.

What does Pleurobranch mean?

: a gill of a crustacean arising from the side of the thorax — compare podobranch.

What is Arthrobranch and where it is found?

A gill arising from the junction of the limb with the body. [ Gill attached to the articular membrane between body wall and coxa of an appendage. [Butler, T. H.]