"rustbelt" meaning in English

{
  "etymology_templates": [
    {
      "args": {
        "1": "en",
        "2": "rust",
        "3": "belt"
      },
      "expansion": "rust + belt",
      "name": "compound"
    }
  ],
  "etymology_text": "From rust + belt.",
  "forms": [
    {
      "form": "rustbelts",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "rustbelt (plural rustbelts)",
      "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",
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          "source": "w"
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      "examples": [
        {
          "text": "The rustbelt was hit hard by the recession because it no longer had the high-paying manufacturing jobs to keep the tax base up.",
          "type": "example"
        }
      ],
      "glosses": [
        "A region of dilapidated or former manufacturing concerns."
      ],
      "id": "en-rustbelt-en-noun-i-vfhXJh",
      "links": [
        [
          "dilapidated",
          "dilapidated"
        ],
        [
          "concerns",
          "concerns"
        ]
      ],
      "synonyms": [
        {
          "word": "rust belt"
        },
        {
          "word": "rust-belt"
        }
      ]
    }
  ],
  "word": "rustbelt"
}

{
  "etymology_templates": [
    {
      "args": {
        "1": "en",
        "2": "rust",
        "3": "belt"
      },
      "expansion": "rust + belt",
      "name": "compound"
    }
  ],
  "etymology_text": "From rust + belt.",
  "forms": [
    {
      "form": "rustbelts",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "rustbelt (plural rustbelts)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
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      "examples": [
        {
          "text": "The rustbelt was hit hard by the recession because it no longer had the high-paying manufacturing jobs to keep the tax base up.",
          "type": "example"
        }
      ],
      "glosses": [
        "A region of dilapidated or former manufacturing concerns."
      ],
      "links": [
        [
          "dilapidated",
          "dilapidated"
        ],
        [
          "concerns",
          "concerns"
        ]
      ]
    }
  ],
  "synonyms": [
    {
      "word": "rust belt"
    },
    {
      "word": "rust-belt"
    }
  ],
  "word": "rustbelt"
}