| Noun | 1. | class Gastropoda - snails and slugs and their relativesgastropod, univalve - a class of mollusks typically having a one-piece coiled shell and flattened muscular foot with a head bearing stalked eyes limpet - any of various usually marine gastropods with low conical shells; found clinging to rocks in littoral areas order Pulmonata, Pulmonata - large order of gastropods usually breathing by means of a lung-like sac comprising most land snails and slugs and many freshwater snails class - (biology) a taxonomic group containing one or more orders | |