"þjóðaratkvæði" meaning in Icelandic

{
  "etymology_templates": [
    {
      "args": {
        "1": "is",
        "2": "þjóð",
        "3": "atkvæði"
      },
      "expansion": "þjóð + atkvæði",
      "name": "af"
    }
  ],
  "etymology_text": "þjóð + atkvæði",
  "head_templates": [
    {
      "args": {
        "1": "is",
        "2": "noun"
      },
      "expansion": "þjóðaratkvæði",
      "name": "head"
    }
  ],
  "lang": "Icelandic",
  "lang_code": "is",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "Icelandic entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with 1 entry",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with entries",
          "parents": [],
          "source": "w"
        }
      ],
      "glosses": [
        "referendum (direct popular vote)"
      ],
      "id": "en-þjóðaratkvæði-is-noun-60OqOZzD",
      "links": [
        [
          "referendum",
          "referendum"
        ]
      ],
      "synonyms": [
        {
          "word": "þjóðaratkvæðagreiðsla"
        }
      ]
    }
  ],
  "word": "þjóðaratkvæði"
}

{
  "etymology_templates": [
    {
      "args": {
        "1": "is",
        "2": "þjóð",
        "3": "atkvæði"
      },
      "expansion": "þjóð + atkvæði",
      "name": "af"
    }
  ],
  "etymology_text": "þjóð + atkvæði",
  "head_templates": [
    {
      "args": {
        "1": "is",
        "2": "noun"
      },
      "expansion": "þjóðaratkvæði",
      "name": "head"
    }
  ],
  "lang": "Icelandic",
  "lang_code": "is",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        "Icelandic compound terms",
        "Icelandic entries with incorrect language header",
        "Icelandic lemmas",
        "Icelandic nouns",
        "Pages with 1 entry",
        "Pages with entries"
      ],
      "glosses": [
        "referendum (direct popular vote)"
      ],
      "links": [
        [
          "referendum",
          "referendum"
        ]
      ],
      "synonyms": [
        {
          "word": "þjóðaratkvæðagreiðsla"
        }
      ]
    }
  ],
  "word": "þjóðaratkvæði"
}