Noun: peanut worm
- Small unsegmented marine worm that when disturbed retracts its anterior portion into the body giving the appearance of a peanut
"Researchers studied the unique retraction behaviour of peanut worms";
- sipunculid
Derived forms: peanut worms
Type of: invertebrate
Part of: phylum Sipuncula, Sipuncula
Encyclopedia: Peanut worm