"sitting volleyball" meaning in English

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      "expansion": "sitting volleyball (uncountable)",
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  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
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        {
          "kind": "topical",
          "langcode": "en",
          "name": "Volleyball",
          "orig": "en:Volleyball",
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            "Ball games",
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      "glosses": [
        "A form of volleyball played by disabled people, who sit on the court while playing."
      ],
      "id": "en-sitting_volleyball-en-noun-PV8ruSlT",
      "links": [
        [
          "disabled",
          "disabled"
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        [
          "sit",
          "sit"
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          "court",
          "court"
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      "tags": [
        "uncountable"
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      "translations": [
        {
          "code": "fa",
          "lang": "Persian",
          "roman": "vâlibâl-e nešaste",
          "sense": "sitting form of volleyball",
          "word": "والیبال نشسته"
        }
      ],
      "wikipedia": [
        "sitting volleyball"
      ]
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  "word": "sitting volleyball"
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  "lang_code": "en",
  "pos": "noun",
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        "A form of volleyball played by disabled people, who sit on the court while playing."
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          "sit",
          "sit"
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        "sitting volleyball"
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  "translations": [
    {
      "code": "fa",
      "lang": "Persian",
      "roman": "vâlibâl-e nešaste",
      "sense": "sitting form of volleyball",
      "word": "والیبال نشسته"
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  ],
  "word": "sitting volleyball"
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