"четверги" meaning in Russisch

{
  "categories": [
    {
      "kind": "other",
      "name": "Anagramm sortiert (Russisch)",
      "parents": [],
      "source": "w"
    },
    {
      "kind": "other",
      "name": "Deklinierte Form (Russisch)",
      "parents": [],
      "source": "w"
    },
    {
      "kind": "other",
      "name": "Russisch",
      "parents": [],
      "source": "w"
    },
    {
      "kind": "other",
      "name": "Rückläufige Wörterliste (Russisch)",
      "parents": [],
      "source": "w"
    },
    {
      "kind": "other",
      "name": "Siehe auch",
      "orig": "siehe auch",
      "parents": [],
      "source": "w"
    }
  ],
  "lang": "Russisch",
  "lang_code": "ru",
  "pos": "noun",
  "senses": [
    {
      "form_of": [
        {
          "word": "четверг"
        }
      ],
      "glosses": [
        "Nominativ Plural des Substantivs четверг"
      ],
      "id": "de-четверги-ru-noun-EKcxLcYC",
      "tags": [
        "nominative",
        "plural"
      ]
    },
    {
      "form_of": [
        {
          "word": "четверг"
        }
      ],
      "glosses": [
        "Akkusativ Plural des Substantivs четверг"
      ],
      "id": "de-четверги-ru-noun-SSsEOvX8",
      "tags": [
        "accusative",
        "plural"
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "t͡ɕɪtvʲɪrˈɡʲi"
    }
  ],
  "tags": [
    "form-of"
  ],
  "word": "четверги"
}

{
  "categories": [
    "Anagramm sortiert (Russisch)",
    "Deklinierte Form (Russisch)",
    "Russisch",
    "Rückläufige Wörterliste (Russisch)",
    "siehe auch"
  ],
  "lang": "Russisch",
  "lang_code": "ru",
  "pos": "noun",
  "senses": [
    {
      "form_of": [
        {
          "word": "четверг"
        }
      ],
      "glosses": [
        "Nominativ Plural des Substantivs четверг"
      ],
      "tags": [
        "nominative",
        "plural"
      ]
    },
    {
      "form_of": [
        {
          "word": "четверг"
        }
      ],
      "glosses": [
        "Akkusativ Plural des Substantivs четверг"
      ],
      "tags": [
        "accusative",
        "plural"
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "t͡ɕɪtvʲɪrˈɡʲi"
    }
  ],
  "tags": [
    "form-of"
  ],
  "word": "четверги"
}