"central city" meaning in English

{
  "etymology_templates": [
    {
      "args": {
        "1": "en",
        "2": "central",
        "3": "city"
      },
      "expansion": "central + city",
      "name": "compound"
    }
  ],
  "etymology_text": "From central + city.",
  "forms": [
    {
      "form": "central cities",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "central city (plural central cities)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        {
          "_dis": "44 54 2",
          "kind": "other",
          "name": "Pages with 1 entry",
          "parents": [],
          "source": "w+disamb"
        },
        {
          "_dis": "46 52 2",
          "kind": "other",
          "name": "Pages with entries",
          "parents": [],
          "source": "w+disamb"
        },
        {
          "_dis": "50 43 7",
          "kind": "place",
          "langcode": "en",
          "name": "Places",
          "orig": "en:Places",
          "parents": [],
          "source": "w+disamb"
        }
      ],
      "glosses": [
        "The main city of a metropolitan area; particularly one containing multiple cities."
      ],
      "id": "en-central_city-en-noun-xhGsctGE",
      "links": [
        [
          "main",
          "main"
        ],
        [
          "city",
          "city"
        ],
        [
          "metropolitan area",
          "metropolitan area"
        ],
        [
          "multiple",
          "multiple"
        ]
      ],
      "synonyms": [
        {
          "word": "principal city"
        },
        {
          "word": "core city"
        },
        {
          "word": "metropolitan core"
        }
      ]
    },
    {
      "categories": [
        {
          "_dis": "42 56 2",
          "kind": "other",
          "name": "English entries with incorrect language header",
          "parents": [],
          "source": "w+disamb"
        },
        {
          "_dis": "44 54 2",
          "kind": "other",
          "name": "Pages with 1 entry",
          "parents": [],
          "source": "w+disamb"
        },
        {
          "_dis": "46 52 2",
          "kind": "other",
          "name": "Pages with entries",
          "parents": [],
          "source": "w+disamb"
        },
        {
          "_dis": "50 43 7",
          "kind": "place",
          "langcode": "en",
          "name": "Places",
          "orig": "en:Places",
          "parents": [],
          "source": "w+disamb"
        }
      ],
      "glosses": [
        "Synonym of central business district."
      ],
      "id": "en-central_city-en-noun-oRpc4lTY",
      "links": [
        [
          "central business district",
          "central business district#English"
        ]
      ],
      "synonyms": [
        {
          "tags": [
            "synonym",
            "synonym-of"
          ],
          "word": "central business district"
        }
      ]
    },
    {
      "glosses": [
        "Used other than figuratively or idiomatically: see central, city."
      ],
      "id": "en-central_city-en-noun-dv-j6Ckz",
      "links": [
        [
          "central",
          "central#English"
        ],
        [
          "city",
          "city#English"
        ]
      ]
    }
  ],
  "word": "central city"
}

{
  "categories": [
    "English compound terms",
    "English countable nouns",
    "English entries with incorrect language header",
    "English lemmas",
    "English multiword terms",
    "English nouns",
    "Pages with 1 entry",
    "Pages with entries",
    "en:Places"
  ],
  "etymology_templates": [
    {
      "args": {
        "1": "en",
        "2": "central",
        "3": "city"
      },
      "expansion": "central + city",
      "name": "compound"
    }
  ],
  "etymology_text": "From central + city.",
  "forms": [
    {
      "form": "central cities",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "central city (plural central cities)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "glosses": [
        "The main city of a metropolitan area; particularly one containing multiple cities."
      ],
      "links": [
        [
          "main",
          "main"
        ],
        [
          "city",
          "city"
        ],
        [
          "metropolitan area",
          "metropolitan area"
        ],
        [
          "multiple",
          "multiple"
        ]
      ],
      "synonyms": [
        {
          "word": "principal city"
        },
        {
          "word": "core city"
        },
        {
          "word": "metropolitan core"
        }
      ]
    },
    {
      "glosses": [
        "Synonym of central business district."
      ],
      "links": [
        [
          "central business district",
          "central business district#English"
        ]
      ],
      "synonyms": [
        {
          "tags": [
            "synonym",
            "synonym-of"
          ],
          "word": "central business district"
        }
      ]
    },
    {
      "glosses": [
        "Used other than figuratively or idiomatically: see central, city."
      ],
      "links": [
        [
          "central",
          "central#English"
        ],
        [
          "city",
          "city#English"
        ]
      ]
    }
  ],
  "word": "central city"
}