1. large order of gastropods usually breathing by means of a lung-like sac comprising most land snails and slugs and many freshwater snails; [syn: Pulmonata, order Pulmonata]
WordNet (r) 3.0 (2006):
order Pulmonata
n 1: large order of gastropods usually breathing by means of a
lung-like sac comprising most land snails and slugs and
many freshwater snails [syn: Pulmonata, order
Pulmonata]