"Dark Continent" meaning in English

{
  "etymology_text": "Victorian nickname, referring to the fact that little was known in the West about the interior of the continent.",
  "forms": [
    {
      "form": "the Dark Continent",
      "tags": [
        "canonical"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "def": "1",
        "head": "Dark Continent"
      },
      "expansion": "the Dark Continent",
      "name": "en-proper noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "name",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "English entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        }
      ],
      "examples": [
        {
          "ref": "1879 March 12, The Sydney Morning Herald",
          "text": "De Lesseps, the engineer, has been visiting the Boy of Tunis, and trying to get his consent to the scheme for piercing tho isthmus of Zaber, and opening up communication with the interior of the Dark Continent by water.",
          "type": "quotation"
        },
        {
          "ref": "1903 November 10, The Advertiser Adelaide",
          "text": "Africa is still the Dark Continent, the land of the unknown, the remarkable.",
          "type": "quotation"
        }
      ],
      "glosses": [
        "Africa."
      ],
      "id": "en-Dark_Continent-en-name-QD5FFLBa",
      "links": [
        [
          "Africa",
          "Africa"
        ]
      ],
      "raw_glosses": [
        "(sometimes offensive, dated, informal) Africa."
      ],
      "tags": [
        "dated",
        "informal",
        "offensive",
        "sometimes"
      ],
      "translations": [
        {
          "code": "fi",
          "lang": "Finnish",
          "sense": "Africa",
          "word": "musta maanosa"
        },
        {
          "code": "fr",
          "lang": "French",
          "sense": "Africa",
          "tags": [
            "masculine"
          ],
          "word": "continent noir"
        },
        {
          "code": "de",
          "lang": "German",
          "sense": "Africa",
          "tags": [
            "masculine"
          ],
          "word": "Schwarzer Kontinent"
        },
        {
          "code": "ja",
          "lang": "Japanese",
          "roman": "ankoku tairiku",
          "sense": "Africa",
          "word": "暗黒大陸"
        }
      ]
    }
  ],
  "word": "Dark Continent"
}

{
  "etymology_text": "Victorian nickname, referring to the fact that little was known in the West about the interior of the continent.",
  "forms": [
    {
      "form": "the Dark Continent",
      "tags": [
        "canonical"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "def": "1",
        "head": "Dark Continent"
      },
      "expansion": "the Dark Continent",
      "name": "en-proper noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "name",
  "senses": [
    {
      "categories": [
        "English dated terms",
        "English entries with incorrect language header",
        "English informal terms",
        "English lemmas",
        "English multiword terms",
        "English offensive terms",
        "English proper nouns",
        "English terms with quotations",
        "English uncountable nouns"
      ],
      "examples": [
        {
          "ref": "1879 March 12, The Sydney Morning Herald",
          "text": "De Lesseps, the engineer, has been visiting the Boy of Tunis, and trying to get his consent to the scheme for piercing tho isthmus of Zaber, and opening up communication with the interior of the Dark Continent by water.",
          "type": "quotation"
        },
        {
          "ref": "1903 November 10, The Advertiser Adelaide",
          "text": "Africa is still the Dark Continent, the land of the unknown, the remarkable.",
          "type": "quotation"
        }
      ],
      "glosses": [
        "Africa."
      ],
      "links": [
        [
          "Africa",
          "Africa"
        ]
      ],
      "raw_glosses": [
        "(sometimes offensive, dated, informal) Africa."
      ],
      "tags": [
        "dated",
        "informal",
        "offensive",
        "sometimes"
      ]
    }
  ],
  "translations": [
    {
      "code": "fi",
      "lang": "Finnish",
      "sense": "Africa",
      "word": "musta maanosa"
    },
    {
      "code": "fr",
      "lang": "French",
      "sense": "Africa",
      "tags": [
        "masculine"
      ],
      "word": "continent noir"
    },
    {
      "code": "de",
      "lang": "German",
      "sense": "Africa",
      "tags": [
        "masculine"
      ],
      "word": "Schwarzer Kontinent"
    },
    {
      "code": "ja",
      "lang": "Japanese",
      "roman": "ankoku tairiku",
      "sense": "Africa",
      "word": "暗黒大陸"
    }
  ],
  "word": "Dark Continent"
}