"cidade-estado" meaning in Galician

{
  "forms": [
    {
      "form": "cidades-estados",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "f",
        "2": "++"
      },
      "expansion": "cidade-estado f (plural cidades-estados)",
      "name": "gl-noun"
    }
  ],
  "lang": "Galician",
  "lang_code": "gl",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "Galician entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Galician nouns with irregular gender",
          "parents": [
            "Nouns with irregular gender",
            "Irregular nouns",
            "Nouns by inflection type",
            "Nouns",
            "Lemmas"
          ],
          "source": "w"
        }
      ],
      "glosses": [
        "city state"
      ],
      "id": "en-cidade-estado-gl-noun-qAKI2UGi",
      "links": [
        [
          "city state",
          "city state"
        ]
      ],
      "tags": [
        "feminine"
      ]
    }
  ],
  "word": "cidade-estado"
}

{
  "forms": [
    {
      "form": "cidades-estados",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "f",
        "2": "++"
      },
      "expansion": "cidade-estado f (plural cidades-estados)",
      "name": "gl-noun"
    }
  ],
  "lang": "Galician",
  "lang_code": "gl",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        "Galician countable nouns",
        "Galician entries with incorrect language header",
        "Galician feminine nouns",
        "Galician lemmas",
        "Galician multiword terms",
        "Galician nouns",
        "Galician nouns with irregular gender",
        "Galician nouns with red links in their headword lines"
      ],
      "glosses": [
        "city state"
      ],
      "links": [
        [
          "city state",
          "city state"
        ]
      ],
      "tags": [
        "feminine"
      ]
    }
  ],
  "word": "cidade-estado"
}