"uncharted" meaning in English

{
  "etymology_templates": [
    {
      "args": {
        "1": "en",
        "2": "un",
        "3": "charted"
      },
      "expansion": "un- + charted",
      "name": "prefix"
    }
  ],
  "etymology_text": "un- + charted",
  "forms": [
    {
      "form": "more uncharted",
      "tags": [
        "comparative"
      ]
    },
    {
      "form": "most uncharted",
      "tags": [
        "superlative"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "uncharted (comparative more uncharted, superlative most uncharted)",
      "name": "en-adj"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "adj",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "English entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "English terms prefixed with un-",
          "parents": [],
          "source": "w"
        }
      ],
      "derived": [
        {
          "word": "uncharted territory"
        },
        {
          "word": "uncharted water"
        }
      ],
      "examples": [
        {
          "ref": "1979, Douglas Adams, The Hitchhiker's Guide to the Galaxy",
          "text": "Far out in the uncharted backwaters of the unfashionable end of the Western Spiral arm of the Galaxy lies a small unregarded yellow sun.",
          "type": "quotation"
        },
        {
          "ref": "2013 November 27, John Grotzinger, “The world of Mars [print version: International Herald Tribune Magazine, 2013, p. 36]”, in The New York Times",
          "text": "John Wesley Powell ... the one-armed Civil War veteran led nine men in four wooden dories down the untamed and uncharted Colorado River and into the equally untamed and uncharted Grand Canyon.",
          "type": "quotation"
        }
      ],
      "glosses": [
        "not surveyed or mapped"
      ],
      "id": "en-uncharted-en-adj-M5P71VEF",
      "links": [
        [
          "surveyed",
          "surveyed"
        ],
        [
          "mapped",
          "mapped"
        ]
      ]
    }
  ],
  "word": "uncharted"
}

{
  "derived": [
    {
      "word": "uncharted territory"
    },
    {
      "word": "uncharted water"
    }
  ],
  "etymology_templates": [
    {
      "args": {
        "1": "en",
        "2": "un",
        "3": "charted"
      },
      "expansion": "un- + charted",
      "name": "prefix"
    }
  ],
  "etymology_text": "un- + charted",
  "forms": [
    {
      "form": "more uncharted",
      "tags": [
        "comparative"
      ]
    },
    {
      "form": "most uncharted",
      "tags": [
        "superlative"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "uncharted (comparative more uncharted, superlative most uncharted)",
      "name": "en-adj"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "adj",
  "senses": [
    {
      "categories": [
        "English adjectives",
        "English entries with incorrect language header",
        "English lemmas",
        "English terms prefixed with un-",
        "English terms with quotations",
        "Quotation templates to be cleaned"
      ],
      "examples": [
        {
          "ref": "1979, Douglas Adams, The Hitchhiker's Guide to the Galaxy",
          "text": "Far out in the uncharted backwaters of the unfashionable end of the Western Spiral arm of the Galaxy lies a small unregarded yellow sun.",
          "type": "quotation"
        },
        {
          "ref": "2013 November 27, John Grotzinger, “The world of Mars [print version: International Herald Tribune Magazine, 2013, p. 36]”, in The New York Times",
          "text": "John Wesley Powell ... the one-armed Civil War veteran led nine men in four wooden dories down the untamed and uncharted Colorado River and into the equally untamed and uncharted Grand Canyon.",
          "type": "quotation"
        }
      ],
      "glosses": [
        "not surveyed or mapped"
      ],
      "links": [
        [
          "surveyed",
          "surveyed"
        ],
        [
          "mapped",
          "mapped"
        ]
      ]
    }
  ],
  "word": "uncharted"
}