Parapodium n. : One of the lateral appendages of an annelid; -- called also foot tubercle.

Example:


Taxonomy
Parapodia, Clade, polychaete worms, free encyclopedia, branches, characteristic, cirri, Epitoke parapodium, sea hare, sea snails, opisthobranch, gastropod mollusks, polychaete, search, podia, outgrowths, body, marine.

Defination from the web:
parapodia. The fleshy protrusions on the sides of some snails are also called parapodia (they are particularly well-developed in sea butterflies) ...