sea slug
noun
a nudibranch.
Origin of sea slug
First recorded in 1770–80
Words nearby sea slug
sea scorpion,
sea scout,
sea serpent,
sea shanty,
sea slater,
sea slug,
sea snail,
sea snake,
sea spider,
sea squab,
sea squill
Example sentences from the Web for sea slug
British Dictionary definitions for sea slug
sea slug
noun
any of various shell-less marine gastropod molluscs, esp those of the order Nudibranchia
See nudibranch
Scientific definitions for sea slug
sea slug
Any of various colorful marine gastropods of the suborder Nudibranchia, lacking a shell and gills but having fringelike projections that serve as respiratory organs. Also called nudibranch