sea slug is a noun meaning "any of various marine gastropods of the suborder Nudibranchia having a shell-less and often beautifully colored body". It carries one recorded sense.
any of various marine gastropods of the suborder Nudibranchia having a shell-less and often beautifully colored body
Definitions, synonyms and semantic relations for sea slug come from Princeton University’s WordNet. Commonness is measured against a corpus of everyday English. Full sources and licences.