"É.-U." meaning in French

{
  "head_templates": [
    {
      "args": {
        "1": "m-p",
        "head": "É.-U."
      },
      "expansion": "É.-U. m pl (plural only)",
      "name": "fr-proper noun"
    }
  ],
  "lang": "French",
  "lang_code": "fr",
  "pos": "name",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "French entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "French pluralia tantum",
          "parents": [
            "Pluralia tantum",
            "Nouns",
            "Lemmas"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with 1 entry",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with entries",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "place",
          "langcode": "fr",
          "name": "Countries",
          "orig": "fr:Countries",
          "parents": [
            "Polities",
            "Places",
            "Names",
            "All topics",
            "Proper nouns",
            "Terms by semantic function",
            "Fundamental",
            "Nouns",
            "Lemmas"
          ],
          "source": "w"
        },
        {
          "kind": "place",
          "langcode": "fr",
          "name": "Countries in North America",
          "orig": "fr:Countries in North America",
          "parents": [
            "Countries",
            "Places",
            "North America",
            "Polities",
            "Names",
            "America",
            "All topics",
            "Proper nouns",
            "Terms by semantic function",
            "Earth",
            "Fundamental",
            "Nouns",
            "Nature",
            "Lemmas"
          ],
          "source": "w"
        }
      ],
      "examples": [
        {
          "english": "The current vice-president of the US is Kamala Harris.",
          "text": "L’actuelle vice-présidente des É.-U., c’est Kamala Harris.",
          "type": "example"
        }
      ],
      "glosses": [
        "US, USA (a country in North America); initialism of États-Unis (“United States”)"
      ],
      "id": "en-É.-U.-fr-name-dRO48hyB",
      "links": [
        [
          "US",
          "US#English"
        ],
        [
          "USA",
          "USA#English"
        ],
        [
          "North America",
          "North America#English"
        ],
        [
          "États-Unis",
          "États-Unis#French"
        ]
      ],
      "synonyms": [
        {
          "word": "ÉUA"
        },
        {
          "word": "USA"
        },
        {
          "word": "ÉU"
        },
        {
          "word": "É-U"
        }
      ],
      "tags": [
        "masculine",
        "plural",
        "plural-only"
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "/e.y/"
    }
  ],
  "word": "É.-U."
}

{
  "head_templates": [
    {
      "args": {
        "1": "m-p",
        "head": "É.-U."
      },
      "expansion": "É.-U. m pl (plural only)",
      "name": "fr-proper noun"
    }
  ],
  "lang": "French",
  "lang_code": "fr",
  "pos": "name",
  "senses": [
    {
      "categories": [
        "French 2-syllable words",
        "French entries with incorrect language header",
        "French initialisms",
        "French lemmas",
        "French masculine nouns",
        "French multiword terms",
        "French pluralia tantum",
        "French proper nouns",
        "French terms spelled with .",
        "French terms with IPA pronunciation",
        "French terms with redundant head parameter",
        "French terms with usage examples",
        "Pages with 1 entry",
        "Pages with entries",
        "fr:Countries",
        "fr:Countries in North America"
      ],
      "examples": [
        {
          "english": "The current vice-president of the US is Kamala Harris.",
          "text": "L’actuelle vice-présidente des É.-U., c’est Kamala Harris.",
          "type": "example"
        }
      ],
      "glosses": [
        "US, USA (a country in North America); initialism of États-Unis (“United States”)"
      ],
      "links": [
        [
          "US",
          "US#English"
        ],
        [
          "USA",
          "USA#English"
        ],
        [
          "North America",
          "North America#English"
        ],
        [
          "États-Unis",
          "États-Unis#French"
        ]
      ],
      "synonyms": [
        {
          "word": "ÉUA"
        },
        {
          "word": "USA"
        }
      ],
      "tags": [
        "masculine",
        "plural",
        "plural-only"
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "/e.y/"
    }
  ],
  "synonyms": [
    {
      "word": "ÉU"
    },
    {
      "word": "É-U"
    }
  ],
  "word": "É.-U."
}