"URSS" meaning in Italian

{
  "etymology_templates": [
    {
      "args": {
        "1": "it",
        "2": "Unione delle Repubbliche Socialiste Sovietiche"
      },
      "expansion": "Initialism of Unione delle Repubbliche Socialiste Sovietiche",
      "name": "initialism"
    }
  ],
  "etymology_text": "Initialism of Unione delle Repubbliche Socialiste Sovietiche.",
  "head_templates": [
    {
      "args": {
        "1": "f"
      },
      "expansion": "URSS f",
      "name": "it-proper noun"
    }
  ],
  "lang": "Italian",
  "lang_code": "it",
  "pos": "name",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "Italian entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with 10 entries",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with entries",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "place",
          "langcode": "it",
          "name": "Soviet Union",
          "orig": "it:Soviet Union",
          "parents": [
            "Asia",
            "Europe",
            "Earth",
            "Eurasia",
            "Nature",
            "All topics",
            "Fundamental"
          ],
          "source": "w"
        }
      ],
      "glosses": [
        "USSR (the Soviet Union)"
      ],
      "id": "en-URSS-it-name-ImQs6aXv",
      "links": [
        [
          "USSR",
          "USSR"
        ]
      ],
      "synonyms": [
        {
          "word": "Unione Sovietica"
        }
      ],
      "tags": [
        "feminine"
      ]
    }
  ],
  "word": "URSS"
}

{
  "etymology_templates": [
    {
      "args": {
        "1": "it",
        "2": "Unione delle Repubbliche Socialiste Sovietiche"
      },
      "expansion": "Initialism of Unione delle Repubbliche Socialiste Sovietiche",
      "name": "initialism"
    }
  ],
  "etymology_text": "Initialism of Unione delle Repubbliche Socialiste Sovietiche.",
  "head_templates": [
    {
      "args": {
        "1": "f"
      },
      "expansion": "URSS f",
      "name": "it-proper noun"
    }
  ],
  "lang": "Italian",
  "lang_code": "it",
  "pos": "name",
  "senses": [
    {
      "categories": [
        "Italian entries with incorrect language header",
        "Italian feminine nouns",
        "Italian initialisms",
        "Italian lemmas",
        "Italian proper nouns",
        "Pages with 10 entries",
        "Pages with entries",
        "it:Soviet Union"
      ],
      "glosses": [
        "USSR (the Soviet Union)"
      ],
      "links": [
        [
          "USSR",
          "USSR"
        ]
      ],
      "synonyms": [
        {
          "word": "Unione Sovietica"
        }
      ],
      "tags": [
        "feminine"
      ]
    }
  ],
  "word": "URSS"
}