| NOUN | animal | sipunculid, peanut worm | small unsegmented marine worm that when disturbed retracts its anterior portion into the body giving the appearance of a peanut |
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| Meaning | small unsegmented marine worm that when disturbed retracts its anterior portion into the body giving the appearance of a peanut. | |
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| Synonym | peanut worm | |
| Member of | Sipuncula, phylum Sipuncula | peanut worms |
| Broader | invertebrate | Any animal lacking a backbone or notochord |
| Spanish | sipunculid | |
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