"Mother City" meaning in English

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      "name": "en-proper noun"
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  "lang": "English",
  "lang_code": "en",
  "pos": "name",
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        },
        {
          "kind": "place",
          "langcode": "en",
          "name": "Cities",
          "orig": "en:Cities",
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            "Polities",
            "Places",
            "Names",
            "All topics",
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      ],
      "glosses": [
        "Cape Town"
      ],
      "id": "en-Mother_City-en-name-Hw72TrOB",
      "links": [
        [
          "Cape Town",
          "Cape Town"
        ]
      ]
    }
  ],
  "word": "Mother City"
}

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    {
      "args": {
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      },
      "expansion": "Mother City",
      "name": "en-proper noun"
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  "lang": "English",
  "lang_code": "en",
  "pos": "name",
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        "en:Cities"
      ],
      "glosses": [
        "Cape Town"
      ],
      "links": [
        [
          "Cape Town",
          "Cape Town"
        ]
      ]
    }
  ],
  "word": "Mother City"
}