Source : Webster's Revised Unabridged Dictionary (1913)

Pleopod \Ple"o*pod\, n.; pl. E. {Pleopods}, L. {Pleopoda}. [Gr.
   ? to swim + -pod.] (Zo["o]l.)
   One of the abdominal legs of a crustacean. See Illust. under
   {Crustacea}.

Source : WordNet®

pleopod
     n : 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 [syn: {swimmeret}]