"key to the city" meaning in English

{
  "forms": [
    {
      "form": "keys to the city",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "keys to the city"
      },
      "expansion": "key to the city (plural keys to the city)",
      "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",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Entries with translation boxes",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with 1 entry",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with entries",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Terms with Finnish translations",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Terms with French translations",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Terms with German translations",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Terms with Japanese translations",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "topical",
          "langcode": "en",
          "name": "Awards",
          "orig": "en:Awards",
          "parents": [
            "Society",
            "All topics",
            "Fundamental"
          ],
          "source": "w"
        }
      ],
      "glosses": [
        "An ornamental key sometimes given as a symbol of a freedom of the city."
      ],
      "id": "en-key_to_the_city-en-noun-d~xnIFgD",
      "links": [
        [
          "key",
          "key"
        ],
        [
          "freedom of the city",
          "freedom of the city"
        ]
      ],
      "related": [
        {
          "word": "keys to the kingdom"
        }
      ],
      "translations": [
        {
          "code": "fi",
          "lang": "Finnish",
          "sense": "Translations",
          "word": "kaupungin avain"
        },
        {
          "code": "fr",
          "lang": "French",
          "sense": "Translations",
          "tags": [
            "feminine",
            "plural"
          ],
          "word": "clés de la ville"
        },
        {
          "code": "fr",
          "lang": "French",
          "sense": "Translations",
          "tags": [
            "feminine"
          ],
          "word": "clé de la ville"
        },
        {
          "code": "de",
          "lang": "German",
          "sense": "Translations",
          "tags": [
            "masculine"
          ],
          "word": "Stadtschlüssel"
        },
        {
          "alt": "しのかぎ",
          "code": "ja",
          "lang": "Japanese",
          "roman": "shi no kagi",
          "sense": "Translations",
          "word": "市の鍵"
        },
        {
          "code": "pl",
          "lang": "Polish",
          "note": "not used in Polish",
          "sense": "Translations"
        }
      ]
    }
  ],
  "word": "key to the city"
}

{
  "forms": [
    {
      "form": "keys to the city",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "keys to the city"
      },
      "expansion": "key to the city (plural keys to the city)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "related": [
    {
      "word": "keys to the kingdom"
    }
  ],
  "senses": [
    {
      "categories": [
        "English countable nouns",
        "English entries with incorrect language header",
        "English lemmas",
        "English multiword terms",
        "English nouns",
        "Entries with translation boxes",
        "Pages with 1 entry",
        "Pages with entries",
        "Terms with Finnish translations",
        "Terms with French translations",
        "Terms with German translations",
        "Terms with Japanese translations",
        "Translation table header lacks gloss",
        "en:Awards"
      ],
      "glosses": [
        "An ornamental key sometimes given as a symbol of a freedom of the city."
      ],
      "links": [
        [
          "key",
          "key"
        ],
        [
          "freedom of the city",
          "freedom of the city"
        ]
      ]
    }
  ],
  "translations": [
    {
      "code": "fi",
      "lang": "Finnish",
      "sense": "Translations",
      "word": "kaupungin avain"
    },
    {
      "code": "fr",
      "lang": "French",
      "sense": "Translations",
      "tags": [
        "feminine",
        "plural"
      ],
      "word": "clés de la ville"
    },
    {
      "code": "fr",
      "lang": "French",
      "sense": "Translations",
      "tags": [
        "feminine"
      ],
      "word": "clé de la ville"
    },
    {
      "code": "de",
      "lang": "German",
      "sense": "Translations",
      "tags": [
        "masculine"
      ],
      "word": "Stadtschlüssel"
    },
    {
      "alt": "しのかぎ",
      "code": "ja",
      "lang": "Japanese",
      "roman": "shi no kagi",
      "sense": "Translations",
      "word": "市の鍵"
    },
    {
      "code": "pl",
      "lang": "Polish",
      "note": "not used in Polish",
      "sense": "Translations"
    }
  ],
  "word": "key to the city"
}