"niczego" meaning in Polish

{
  "head_templates": [
    {
      "args": {
        "1": "pl",
        "2": "pronoun form"
      },
      "expansion": "niczego",
      "name": "head"
    }
  ],
  "hyphenation": [
    "ni‧cze‧go"
  ],
  "lang": "Polish",
  "lang_code": "pl",
  "pos": "pron",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "Pages with 1 entry",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with entries",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Polish entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        }
      ],
      "form_of": [
        {
          "word": "nic"
        }
      ],
      "glosses": [
        "genitive of nic"
      ],
      "id": "en-niczego-pl-pron-21y0OQYM",
      "links": [
        [
          "nic",
          "nic#Polish"
        ]
      ],
      "tags": [
        "form-of",
        "genitive"
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "/ɲiˈt͡ʂɛ.ɡɔ/"
    },
    {
      "rhymes": "-ɛɡɔ"
    },
    {
      "homophone": "Nietzschego"
    }
  ],
  "word": "niczego"
}

{
  "head_templates": [
    {
      "args": {
        "1": "pl",
        "2": "pronoun form"
      },
      "expansion": "niczego",
      "name": "head"
    }
  ],
  "hyphenation": [
    "ni‧cze‧go"
  ],
  "lang": "Polish",
  "lang_code": "pl",
  "pos": "pron",
  "senses": [
    {
      "categories": [
        "Pages with 1 entry",
        "Pages with entries",
        "Polish 3-syllable words",
        "Polish entries with incorrect language header",
        "Polish non-lemma forms",
        "Polish pronoun forms",
        "Polish terms with IPA pronunciation",
        "Polish terms with audio links",
        "Polish terms with homophones",
        "Rhymes:Polish/ɛɡɔ",
        "Rhymes:Polish/ɛɡɔ/3 syllables"
      ],
      "form_of": [
        {
          "word": "nic"
        }
      ],
      "glosses": [
        "genitive of nic"
      ],
      "links": [
        [
          "nic",
          "nic#Polish"
        ]
      ],
      "tags": [
        "form-of",
        "genitive"
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "/ɲiˈt͡ʂɛ.ɡɔ/"
    },
    {
      "rhymes": "-ɛɡɔ"
    },
    {
      "homophone": "Nietzschego"
    }
  ],
  "word": "niczego"
}