"toy model" meaning in English

{
  "forms": [
    {
      "form": "toy models",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
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      "args": {},
      "expansion": "toy model (plural toy models)",
      "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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      "examples": [
        {
          "ref": "1995, Jeffery M. Landgraf, Reduced Basis Methods for the 1/N Expansion of the Anderson Model",
          "text": "To examine this issue we discuss a simplified toy model where the energy of the conduction band is independent of k, which may be solved exactly.",
          "type": "quotation"
        }
      ],
      "glosses": [
        "Synonym of toy theory"
      ],
      "id": "en-toy_model-en-noun-PLo2BS6R",
      "links": [
        [
          "toy theory",
          "toy theory#English"
        ]
      ],
      "synonyms": [
        {
          "tags": [
            "synonym",
            "synonym-of"
          ],
          "word": "toy theory"
        }
      ]
    }
  ],
  "word": "toy model"
}

{
  "forms": [
    {
      "form": "toy models",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "toy model (plural toy models)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        "English countable nouns",
        "English entries with incorrect language header",
        "English lemmas",
        "English multiword terms",
        "English nouns",
        "English terms with quotations",
        "Quotation templates to be cleaned"
      ],
      "examples": [
        {
          "ref": "1995, Jeffery M. Landgraf, Reduced Basis Methods for the 1/N Expansion of the Anderson Model",
          "text": "To examine this issue we discuss a simplified toy model where the energy of the conduction band is independent of k, which may be solved exactly.",
          "type": "quotation"
        }
      ],
      "glosses": [
        "Synonym of toy theory"
      ],
      "links": [
        [
          "toy theory",
          "toy theory#English"
        ]
      ],
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          "word": "toy theory"
        }
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  ],
  "word": "toy model"
}