1. Soft unsegmented marine worms that have a threadlike proboscis and the ability to stretch and contract
   "The proboscis worm extended its long proboscis to catch prey";
   - ribbon worm, nemertean, nemertine

Derived forms: proboscis worms

Type of: worm

Part of: Nemertea, Nemertina, phylum Nemertea, phylum Nemertina

Encyclopedia: Proboscis worm