"fibrillando" meaning in Italian

{
  "head_templates": [
    {
      "args": {
        "1": "it",
        "2": "gerund"
      },
      "expansion": "fibrillando",
      "name": "head"
    }
  ],
  "lang": "Italian",
  "lang_code": "it",
  "pos": "verb",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "Italian entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
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          "source": "w"
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          "name": "Pages with 1 entry",
          "parents": [],
          "source": "w"
        }
      ],
      "form_of": [
        {
          "word": "fibrillare"
        }
      ],
      "glosses": [
        "gerund of fibrillare"
      ],
      "id": "en-fibrillando-it-verb-zKas9Uv4",
      "links": [
        [
          "fibrillare",
          "fibrillare#Italian"
        ]
      ],
      "tags": [
        "form-of",
        "gerund"
      ]
    }
  ],
  "word": "fibrillando"
}

{
  "head_templates": [
    {
      "args": {
        "1": "it",
        "2": "gerund"
      },
      "expansion": "fibrillando",
      "name": "head"
    }
  ],
  "lang": "Italian",
  "lang_code": "it",
  "pos": "verb",
  "senses": [
    {
      "categories": [
        "Italian entries with incorrect language header",
        "Italian gerunds",
        "Italian non-lemma forms",
        "Pages with 1 entry"
      ],
      "form_of": [
        {
          "word": "fibrillare"
        }
      ],
      "glosses": [
        "gerund of fibrillare"
      ],
      "links": [
        [
          "fibrillare",
          "fibrillare#Italian"
        ]
      ],
      "tags": [
        "form-of",
        "gerund"
      ]
    }
  ],
  "word": "fibrillando"
}