"superstock" meaning in English

{
  "etymology_templates": [
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      "args": {
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        "2": "super",
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      "expansion": "super- + stock",
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  ],
  "etymology_text": "From super- + stock.",
  "forms": [
    {
      "form": "superstocks",
      "tags": [
        "plural"
      ]
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  "head_templates": [
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      "args": {},
      "expansion": "superstock (plural superstocks)",
      "name": "en-noun"
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  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
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          "kind": "topical",
          "langcode": "en",
          "name": "Linguistics",
          "orig": "en:Linguistics",
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      "glosses": [
        "A broad grouping of languages; a phylum."
      ],
      "id": "en-superstock-en-noun-gemz7SCi",
      "links": [
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          "linguistics",
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        [
          "phylum",
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      "raw_glosses": [
        "(linguistics) A broad grouping of languages; a phylum."
      ],
      "topics": [
        "human-sciences",
        "linguistics",
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    {
      "categories": [
        {
          "_dis": "44 56",
          "kind": "other",
          "name": "English terms prefixed with super-",
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      ],
      "glosses": [
        "A kind of premier stock car with a strong roll cage and usually a modified V8 engine."
      ],
      "id": "en-superstock-en-noun-IdWHrDJ4",
      "links": [
        [
          "premier",
          "premier"
        ],
        [
          "stock car",
          "stock car"
        ],
        [
          "roll cage",
          "roll cage"
        ],
        [
          "V8",
          "V8"
        ],
        [
          "engine",
          "engine"
        ]
      ]
    }
  ],
  "word": "superstock"
}

{
  "categories": [
    "English countable nouns",
    "English entries with incorrect language header",
    "English lemmas",
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    "English terms prefixed with super-",
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        "2": "super",
        "3": "stock"
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      "expansion": "super- + stock",
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  ],
  "etymology_text": "From super- + stock.",
  "forms": [
    {
      "form": "superstocks",
      "tags": [
        "plural"
      ]
    }
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  "head_templates": [
    {
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      "expansion": "superstock (plural superstocks)",
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        "(linguistics) A broad grouping of languages; a phylum."
      ],
      "topics": [
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    },
    {
      "glosses": [
        "A kind of premier stock car with a strong roll cage and usually a modified V8 engine."
      ],
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        [
          "premier",
          "premier"
        ],
        [
          "stock car",
          "stock car"
        ],
        [
          "roll cage",
          "roll cage"
        ],
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          "V8",
          "V8"
        ],
        [
          "engine",
          "engine"
        ]
      ]
    }
  ],
  "word": "superstock"
}