Definition of peanut worm in English:

peanut worm


  • An unsegmented burrowing marine worm with a stout body and a slender retractable anterior part bearing a terminal mouth surrounded by tentacles.

    • ‘Sipunculans, or peanut worms, have an unsegmented body with a retractable introvert.’
    • ‘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.’