"grisù" meaning in Italian

{
  "head_templates": [
    {
      "args": {
        "1": "m",
        "2": "#"
      },
      "expansion": "grisù m (invariable)",
      "name": "it-noun"
    }
  ],
  "hyphenation": [
    "gri‧sù"
  ],
  "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"
        }
      ],
      "derived": [
        {
          "word": "grisumetro"
        }
      ],
      "glosses": [
        "firedamp"
      ],
      "id": "en-grisù-it-noun-oSeE946P",
      "links": [
        [
          "firedamp",
          "firedamp"
        ]
      ],
      "synonyms": [
        {
          "word": "grisou"
        }
      ],
      "tags": [
        "invariable",
        "masculine"
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "/ɡriˈzu/"
    },
    {
      "rhymes": "-u"
    }
  ],
  "word": "grisù"
}

{
  "derived": [
    {
      "word": "grisumetro"
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "m",
        "2": "#"
      },
      "expansion": "grisù m (invariable)",
      "name": "it-noun"
    }
  ],
  "hyphenation": [
    "gri‧sù"
  ],
  "lang": "Italian",
  "lang_code": "it",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        "Italian 2-syllable words",
        "Italian countable nouns",
        "Italian entries with incorrect language header",
        "Italian indeclinable nouns",
        "Italian lemmas",
        "Italian masculine nouns",
        "Italian nouns",
        "Italian terms with IPA pronunciation",
        "Rhymes:Italian/u",
        "Rhymes:Italian/u/2 syllables"
      ],
      "glosses": [
        "firedamp"
      ],
      "links": [
        [
          "firedamp",
          "firedamp"
        ]
      ],
      "tags": [
        "invariable",
        "masculine"
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "/ɡriˈzu/"
    },
    {
      "rhymes": "-u"
    }
  ],
  "synonyms": [
    {
      "word": "grisou"
    }
  ],
  "word": "grisù"
}