"heart urchin" meaning in All languages combined

{
  "forms": [
    {
      "form": "heart urchins",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "heart urchin (plural heart urchins)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "English entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "English entries with topic categories using raw markup",
          "parents": [
            "Entries with topic categories using raw markup",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "English terms with non-redundant non-automated sortkeys",
          "parents": [
            "Terms with non-redundant non-automated sortkeys",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "lifeform",
          "langcode": "en",
          "name": "Sea urchins",
          "orig": "en:Sea urchins",
          "parents": [
            "Echinoderms",
            "Animals",
            "Lifeforms",
            "All topics",
            "Life",
            "Fundamental",
            "Nature"
          ],
          "source": "w"
        }
      ],
      "examples": [
        {
          "ref": "1996, Marty Snyderman, chapter I, in Guide to Marine Life: Caribbean, Bahamas, Florida, page 129",
          "text": "Red heart urchins, like other heart urchins, are usually buried under the sand and are only seen on rare occasions.",
          "type": "quotation"
        },
        {
          "ref": "2003, Gunther J. Eble, “Developmental Morphospaces and Evolution”, in James P. Crutchfield, Peter Schuster, editors, Evolutionary Dynamics, page 47",
          "text": "Spatangoids constitute a monophyletic group of heart urchins that appears in the early Cretaceous (145 M.Y. ago) and ranges to the Recent.",
          "type": "quotation"
        },
        {
          "ref": "2007, Marian Armstrong, Wildlife and Plants, 3rd edition, volume 16, page 967",
          "text": "The class of animals (Echinoidea) that sea urchins belong to includes sand dollars and heart urchins. Sand dollars are flat, while heart urchins are oval, covered in short spines with longer spines down their back.",
          "type": "quotation"
        }
      ],
      "glosses": [
        "Any echinoderm of the class Spatangoida."
      ],
      "id": "en-heart_urchin-en-noun-F1kaLBRx",
      "links": [
        [
          "echinoderm",
          "echinoderm"
        ],
        [
          "Spatangoida",
          "Spatangoida#Translingual"
        ]
      ],
      "related": [
        {
          "word": "sand dollar"
        },
        {
          "word": "sea urchin"
        }
      ],
      "synonyms": [
        {
          "sense": "any species of Spatangoida",
          "word": "spatangoid"
        }
      ],
      "wikipedia": [
        "heart urchin"
      ]
    }
  ],
  "word": "heart urchin"
}

{
  "forms": [
    {
      "form": "heart urchins",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "heart urchin (plural heart urchins)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "related": [
    {
      "word": "sand dollar"
    },
    {
      "word": "sea urchin"
    }
  ],
  "senses": [
    {
      "categories": [
        "English countable nouns",
        "English entries with incorrect language header",
        "English entries with topic categories using raw markup",
        "English lemmas",
        "English multiword terms",
        "English nouns",
        "English terms with non-redundant non-automated sortkeys",
        "English terms with quotations",
        "Quotation templates to be cleaned",
        "en:Sea urchins"
      ],
      "examples": [
        {
          "ref": "1996, Marty Snyderman, chapter I, in Guide to Marine Life: Caribbean, Bahamas, Florida, page 129",
          "text": "Red heart urchins, like other heart urchins, are usually buried under the sand and are only seen on rare occasions.",
          "type": "quotation"
        },
        {
          "ref": "2003, Gunther J. Eble, “Developmental Morphospaces and Evolution”, in James P. Crutchfield, Peter Schuster, editors, Evolutionary Dynamics, page 47",
          "text": "Spatangoids constitute a monophyletic group of heart urchins that appears in the early Cretaceous (145 M.Y. ago) and ranges to the Recent.",
          "type": "quotation"
        },
        {
          "ref": "2007, Marian Armstrong, Wildlife and Plants, 3rd edition, volume 16, page 967",
          "text": "The class of animals (Echinoidea) that sea urchins belong to includes sand dollars and heart urchins. Sand dollars are flat, while heart urchins are oval, covered in short spines with longer spines down their back.",
          "type": "quotation"
        }
      ],
      "glosses": [
        "Any echinoderm of the class Spatangoida."
      ],
      "links": [
        [
          "echinoderm",
          "echinoderm"
        ],
        [
          "Spatangoida",
          "Spatangoida#Translingual"
        ]
      ],
      "wikipedia": [
        "heart urchin"
      ]
    }
  ],
  "synonyms": [
    {
      "sense": "any species of Spatangoida",
      "word": "spatangoid"
    }
  ],
  "word": "heart urchin"
}