"costo imprevisto" meaning in Italian

{
  "forms": [
    {
      "form": "costi imprevisti",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "m"
      },
      "expansion": "costo imprevisto m (plural costi imprevisti)",
      "name": "it-noun"
    }
  ],
  "lang": "Italian",
  "lang_code": "it",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "Italian entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        }
      ],
      "glosses": [
        "incidental expense"
      ],
      "id": "en-costo_imprevisto-it-noun-sQXBzK-C",
      "links": [
        [
          "incidental expense",
          "incidental expense"
        ]
      ],
      "tags": [
        "masculine"
      ]
    }
  ],
  "word": "costo imprevisto"
}

{
  "forms": [
    {
      "form": "costi imprevisti",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "m"
      },
      "expansion": "costo imprevisto m (plural costi imprevisti)",
      "name": "it-noun"
    }
  ],
  "lang": "Italian",
  "lang_code": "it",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        "Italian countable nouns",
        "Italian entries with incorrect language header",
        "Italian lemmas",
        "Italian masculine nouns",
        "Italian multiword terms",
        "Italian nouns"
      ],
      "glosses": [
        "incidental expense"
      ],
      "links": [
        [
          "incidental expense",
          "incidental expense"
        ]
      ],
      "tags": [
        "masculine"
      ]
    }
  ],
  "word": "costo imprevisto"
}