An unsegmented burrowing marine worm with a stout body and a slender retractable anterior part bearing a terminal mouth surrounded by tentacles.
- Phylum Sipuncula
More example sentences
- Settling near a hungry snail could be disastrous for a peanut worm, and landing too far from kelp would doom a sea urchin to starvation.
- Sipunculans, or peanut worms, have an unsegmented body with a retractable introvert.
Definition of peanut worm in:
- The US English dictionary