some of a few velvety, often brightly colored worms of the phylum Nemertina (or Nemertea) having an appartment, unsegmented human anatomy with an extensible proboscis and are now living in the ocean or in the dirt of intertidal zone. Also known as ribbon worm.
some of a number of unsegmented, brightly-coloured worms, of this phylum Nemertea; the ribbon worms
A worm associated with course Nemertea.
smooth unsegmented marine worms having a threadlike proboscis plus the power to stretch and contract