pleopod

Noun

ple=o=pod

WORDNET DICTIONARY

pleopod(n = noun.animal) swimmeret - one of the paired abdominal appendages of certain aquatic crustaceans that function primarily for carrying the eggs in females and are usually adapted for swimming;

is a part of lobster, shrimp, isopod

is a kind of appendage, extremity, member

pleopod, n. [Gr. to swim + -pod.].

One of the abdominal legs of a crustacean. See Illust. under Crustacea. [1913 Webster]