nemertine


From The Collaborative International Dictionary of English v.0.48:

nemertine \nemertine\ n.
   Any of an order (Nemertina) of soft unsegmented marine
   worms having an eversible threadlike proboscis and the
   ability to stretch and contract.

   Syn: ribbon worm, nemertean, proboscis worm.
        [WordNet 1.5]
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