"acorn worm" meaning in English

{
  "forms": [
    {
      "form": "acorn worms",
      "tags": [
        "plural"
      ]
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  ],
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      "expansion": "acorn worm (plural acorn worms)",
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  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
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      "glosses": [
        "A member of a class of worm-like animals, Enteropneusta, with some chordate features."
      ],
      "id": "en-acorn_worm-en-noun-A1RTPh2X",
      "links": [
        [
          "class",
          "class"
        ],
        [
          "Enteropneusta",
          "Enteropneusta#Translingual"
        ],
        [
          "chordate",
          "chordate"
        ]
      ]
    }
  ],
  "word": "acorn worm"
}

{
  "forms": [
    {
      "form": "acorn worms",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
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      "expansion": "acorn worm (plural acorn worms)",
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  "lang_code": "en",
  "pos": "noun",
  "senses": [
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        "English countable nouns",
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        "English multiword terms",
        "English nouns",
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        "en:Animals"
      ],
      "glosses": [
        "A member of a class of worm-like animals, Enteropneusta, with some chordate features."
      ],
      "links": [
        [
          "class",
          "class"
        ],
        [
          "Enteropneusta",
          "Enteropneusta#Translingual"
        ],
        [
          "chordate",
          "chordate"
        ]
      ]
    }
  ],
  "word": "acorn worm"
}