"heartnut" meaning in English

{
  "etymology_templates": [
    {
      "args": {
        "1": "en",
        "2": "heart",
        "3": "nut"
      },
      "expansion": "heart + nut",
      "name": "compound"
    }
  ],
  "etymology_text": "heart + nut",
  "forms": [
    {
      "form": "heartnuts",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "heartnut (plural heartnuts)",
      "name": "en-noun"
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  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "English entries with incorrect language header",
          "parents": [
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          "source": "w"
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          "name": "English entries with topic categories using raw markup",
          "parents": [
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          "source": "w"
        },
        {
          "kind": "lifeform",
          "langcode": "en",
          "name": "Fagales order plants",
          "orig": "en:Fagales order plants",
          "parents": [
            "Plants",
            "Shrubs",
            "Trees",
            "Lifeforms",
            "All topics",
            "Life",
            "Fundamental",
            "Nature"
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          "source": "w"
        },
        {
          "kind": "lifeform",
          "langcode": "en",
          "name": "Nuts",
          "orig": "en:Nuts",
          "parents": [
            "Foods",
            "Plants",
            "Eating",
            "Food and drink",
            "Lifeforms",
            "Human behaviour",
            "All topics",
            "Life",
            "Human",
            "Fundamental",
            "Nature"
          ],
          "source": "w"
        }
      ],
      "glosses": [
        "The edible seed of a Japanese species of walnut, Juglans ailantifolia."
      ],
      "id": "en-heartnut-en-noun-J-XLVxI~",
      "links": [
        [
          "walnut",
          "walnut"
        ]
      ],
      "synonyms": [
        {
          "word": "Japanese walnut"
        }
      ]
    }
  ],
  "word": "heartnut"
}

{
  "etymology_templates": [
    {
      "args": {
        "1": "en",
        "2": "heart",
        "3": "nut"
      },
      "expansion": "heart + nut",
      "name": "compound"
    }
  ],
  "etymology_text": "heart + nut",
  "forms": [
    {
      "form": "heartnuts",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "heartnut (plural heartnuts)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
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        "English compound terms",
        "English countable nouns",
        "English entries with incorrect language header",
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        "English nouns",
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        "en:Fagales order plants",
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      ],
      "glosses": [
        "The edible seed of a Japanese species of walnut, Juglans ailantifolia."
      ],
      "links": [
        [
          "walnut",
          "walnut"
        ]
      ]
    }
  ],
  "synonyms": [
    {
      "word": "Japanese walnut"
    }
  ],
  "word": "heartnut"
}