"S2" meaning in English

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  "pos": "name",
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          "word": "Splatoon 2"
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          "name": "Splatoon",
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        "Abbreviation of Splatoon 2."
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        "(Splatoon fandom slang) Abbreviation of Splatoon 2."
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  "word": "S2"
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  "lang_code": "en",
  "pos": "name",
  "senses": [
    {
      "alt_of": [
        {
          "word": "Splatoon 2"
        }
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      ],
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          "fandom"
        ],
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          "Splatoon 2",
          "w:Splatoon 2"
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      ],
      "qualifier": "Splatoon fandom slang",
      "raw_glosses": [
        "(Splatoon fandom slang) Abbreviation of Splatoon 2."
      ],
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  "word": "S2"
}