"blackband" meaning in English

{
  "etymology_templates": [
    {
      "args": {
        "1": "en",
        "2": "black",
        "3": "band"
      },
      "expansion": "black + band",
      "name": "compound"
    }
  ],
  "etymology_text": "From black + band.",
  "forms": [
    {
      "form": "blackbands",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "blackband (plural blackbands)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "English entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with 1 entry",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with entries",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "topical",
          "langcode": "en",
          "name": "Minerals",
          "orig": "en:Minerals",
          "parents": [
            "Matter",
            "Mineralogy",
            "Chemistry",
            "Nature",
            "Geology",
            "Sciences",
            "All topics",
            "Earth sciences",
            "Fundamental"
          ],
          "source": "w"
        }
      ],
      "glosses": [
        "An earthy carbonate of iron containing considerable carbonaceous matter, valuable as an iron ore."
      ],
      "id": "en-blackband-en-noun-Jcihr7Td",
      "links": [
        [
          "mineralogy",
          "mineralogy"
        ],
        [
          "earthy",
          "earthy"
        ],
        [
          "carbonate",
          "carbonate"
        ],
        [
          "iron",
          "iron"
        ],
        [
          "carbonaceous",
          "carbonaceous"
        ],
        [
          "iron ore",
          "iron ore"
        ]
      ],
      "raw_glosses": [
        "(mineralogy) An earthy carbonate of iron containing considerable carbonaceous matter, valuable as an iron ore."
      ],
      "topics": [
        "chemistry",
        "geography",
        "geology",
        "mineralogy",
        "natural-sciences",
        "physical-sciences"
      ]
    }
  ],
  "word": "blackband"
}

{
  "etymology_templates": [
    {
      "args": {
        "1": "en",
        "2": "black",
        "3": "band"
      },
      "expansion": "black + band",
      "name": "compound"
    }
  ],
  "etymology_text": "From black + band.",
  "forms": [
    {
      "form": "blackbands",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "blackband (plural blackbands)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        "English compound terms",
        "English countable nouns",
        "English entries with incorrect language header",
        "English lemmas",
        "English nouns",
        "Pages with 1 entry",
        "Pages with entries",
        "en:Minerals"
      ],
      "glosses": [
        "An earthy carbonate of iron containing considerable carbonaceous matter, valuable as an iron ore."
      ],
      "links": [
        [
          "mineralogy",
          "mineralogy"
        ],
        [
          "earthy",
          "earthy"
        ],
        [
          "carbonate",
          "carbonate"
        ],
        [
          "iron",
          "iron"
        ],
        [
          "carbonaceous",
          "carbonaceous"
        ],
        [
          "iron ore",
          "iron ore"
        ]
      ],
      "raw_glosses": [
        "(mineralogy) An earthy carbonate of iron containing considerable carbonaceous matter, valuable as an iron ore."
      ],
      "topics": [
        "chemistry",
        "geography",
        "geology",
        "mineralogy",
        "natural-sciences",
        "physical-sciences"
      ]
    }
  ],
  "word": "blackband"
}