"metal pesado" meaning in Portuguese

{
  "forms": [
    {
      "form": "metais pesados",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "m"
      },
      "expansion": "metal pesado m (plural metais pesados)",
      "name": "pt-noun"
    }
  ],
  "lang": "Portuguese",
  "lang_code": "pt",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        {
          "kind": "topical",
          "langcode": "pt",
          "name": "Chemistry",
          "orig": "pt:Chemistry",
          "parents": [
            "Sciences",
            "All topics",
            "Fundamental"
          ],
          "source": "w"
        },
        {
          "_dis": "75 25",
          "kind": "other",
          "name": "Portuguese entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w+disamb"
        }
      ],
      "glosses": [
        "heavy metal (metal that has a specific gravity greater than about 5)"
      ],
      "id": "en-metal_pesado-pt-noun-nNiQyqJ1",
      "links": [
        [
          "chemistry",
          "chemistry"
        ],
        [
          "heavy metal",
          "heavy metal"
        ]
      ],
      "raw_glosses": [
        "(chemistry) heavy metal (metal that has a specific gravity greater than about 5)"
      ],
      "tags": [
        "masculine"
      ],
      "topics": [
        "chemistry",
        "natural-sciences",
        "physical-sciences"
      ]
    },
    {
      "categories": [],
      "glosses": [
        "Synonym of heavy metal"
      ],
      "id": "en-metal_pesado-pt-noun-JxPQrr3T",
      "links": [
        [
          "heavy metal",
          "heavy metal#Portuguese"
        ]
      ],
      "raw_glosses": [
        "(informal) Synonym of heavy metal"
      ],
      "synonyms": [
        {
          "tags": [
            "synonym",
            "synonym-of"
          ],
          "word": "heavy metal"
        }
      ],
      "tags": [
        "informal",
        "masculine"
      ]
    }
  ],
  "word": "metal pesado"
}

{
  "categories": [
    "Portuguese countable nouns",
    "Portuguese entries with incorrect language header",
    "Portuguese lemmas",
    "Portuguese masculine nouns",
    "Portuguese multiword terms",
    "Portuguese nouns",
    "Portuguese nouns with red links in their headword lines"
  ],
  "forms": [
    {
      "form": "metais pesados",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "m"
      },
      "expansion": "metal pesado m (plural metais pesados)",
      "name": "pt-noun"
    }
  ],
  "lang": "Portuguese",
  "lang_code": "pt",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        "pt:Chemistry"
      ],
      "glosses": [
        "heavy metal (metal that has a specific gravity greater than about 5)"
      ],
      "links": [
        [
          "chemistry",
          "chemistry"
        ],
        [
          "heavy metal",
          "heavy metal"
        ]
      ],
      "raw_glosses": [
        "(chemistry) heavy metal (metal that has a specific gravity greater than about 5)"
      ],
      "tags": [
        "masculine"
      ],
      "topics": [
        "chemistry",
        "natural-sciences",
        "physical-sciences"
      ]
    },
    {
      "categories": [
        "Portuguese informal terms"
      ],
      "glosses": [
        "Synonym of heavy metal"
      ],
      "links": [
        [
          "heavy metal",
          "heavy metal#Portuguese"
        ]
      ],
      "raw_glosses": [
        "(informal) Synonym of heavy metal"
      ],
      "synonyms": [
        {
          "tags": [
            "synonym",
            "synonym-of"
          ],
          "word": "heavy metal"
        }
      ],
      "tags": [
        "informal",
        "masculine"
      ]
    }
  ],
  "word": "metal pesado"
}