gas·tro·pod (gs'trY-pOd')
n.

Any of various mollusks of the class Gastropoda, such as the snail, slug, cowrie, or limpet, characteristically having a single, usually coiled shell or no shell at all, a ventral muscular foot for locomotion, and eyes and feelers located on a distinct head.

adj.

Of or belonging to the class Gastropoda.

[From New Latin Gastropoda, class name : GASTRO– + -poda, -pod.]