"blackland" meaning in English

{
  "etymology_templates": [
    {
      "args": {
        "1": "en",
        "2": "black",
        "3": "land"
      },
      "expansion": "black + land",
      "name": "com"
    }
  ],
  "etymology_text": "black + land",
  "forms": [
    {
      "form": "blacklands",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "~"
      },
      "expansion": "blackland (countable and uncountable, plural blacklands)",
      "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"
        }
      ],
      "glosses": [
        "The land making up the Texas Blackland Prairies, a temperate grassland ecoregion in Texas with rich, dark soil."
      ],
      "id": "en-blackland-en-noun-xPDT1DjI",
      "links": [
        [
          "temperate",
          "temperate"
        ],
        [
          "grassland",
          "grassland"
        ],
        [
          "ecoregion",
          "ecoregion"
        ],
        [
          "Texas",
          "Texas"
        ],
        [
          "soil",
          "soil"
        ]
      ],
      "related": [
        {
          "word": "Houston black"
        }
      ],
      "tags": [
        "countable",
        "uncountable"
      ]
    }
  ],
  "word": "blackland"
}

{
  "etymology_templates": [
    {
      "args": {
        "1": "en",
        "2": "black",
        "3": "land"
      },
      "expansion": "black + land",
      "name": "com"
    }
  ],
  "etymology_text": "black + land",
  "forms": [
    {
      "form": "blacklands",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "~"
      },
      "expansion": "blackland (countable and uncountable, plural blacklands)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "related": [
    {
      "word": "Houston black"
    }
  ],
  "senses": [
    {
      "categories": [
        "English compound terms",
        "English countable nouns",
        "English entries with incorrect language header",
        "English lemmas",
        "English nouns",
        "English uncountable nouns"
      ],
      "glosses": [
        "The land making up the Texas Blackland Prairies, a temperate grassland ecoregion in Texas with rich, dark soil."
      ],
      "links": [
        [
          "temperate",
          "temperate"
        ],
        [
          "grassland",
          "grassland"
        ],
        [
          "ecoregion",
          "ecoregion"
        ],
        [
          "Texas",
          "Texas"
        ],
        [
          "soil",
          "soil"
        ]
      ],
      "tags": [
        "countable",
        "uncountable"
      ]
    }
  ],
  "word": "blackland"
}