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}.