"ניהיליזם" meaning in Yiddish

{
  "forms": [
    {
      "form": "nihilizm",
      "tags": [
        "romanization"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "yi",
        "2": "noun",
        "g": "m",
        "g2": "",
        "g3": "",
        "head": "",
        "sort": "",
        "tr": "nihilizm"
      },
      "expansion": "ניהיליזם • (nihilizm) m",
      "name": "head"
    },
    {
      "args": {
        "g": "m",
        "tr": "nihilizm"
      },
      "expansion": "ניהיליזם • (nihilizm) m",
      "name": "yi-noun"
    }
  ],
  "lang": "Yiddish",
  "lang_code": "yi",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "Yiddish entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Yiddish terms with redundant transliterations",
          "parents": [
            "Terms with redundant transliterations",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "topical",
          "langcode": "yi",
          "name": "Philosophy",
          "orig": "yi:Philosophy",
          "parents": [
            "All topics",
            "Fundamental"
          ],
          "source": "w"
        }
      ],
      "glosses": [
        "nihilism"
      ],
      "id": "en-ניהיליזם-yi-noun-Dg6Ptt3K",
      "links": [
        [
          "nihilism",
          "nihilism"
        ]
      ],
      "related": [
        {
          "english": "nihilist",
          "word": "ניהיליסט"
        }
      ]
    }
  ],
  "word": "ניהיליזם"
}

{
  "forms": [
    {
      "form": "nihilizm",
      "tags": [
        "romanization"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "yi",
        "2": "noun",
        "g": "m",
        "g2": "",
        "g3": "",
        "head": "",
        "sort": "",
        "tr": "nihilizm"
      },
      "expansion": "ניהיליזם • (nihilizm) m",
      "name": "head"
    },
    {
      "args": {
        "g": "m",
        "tr": "nihilizm"
      },
      "expansion": "ניהיליזם • (nihilizm) m",
      "name": "yi-noun"
    }
  ],
  "lang": "Yiddish",
  "lang_code": "yi",
  "pos": "noun",
  "related": [
    {
      "english": "nihilist",
      "word": "ניהיליסט"
    }
  ],
  "senses": [
    {
      "categories": [
        "Yiddish entries with incorrect language header",
        "Yiddish lemmas",
        "Yiddish masculine nouns",
        "Yiddish nouns",
        "Yiddish terms with redundant transliterations",
        "yi:Philosophy"
      ],
      "glosses": [
        "nihilism"
      ],
      "links": [
        [
          "nihilism",
          "nihilism"
        ]
      ]
    }
  ],
  "word": "ניהיליזם"
}