"open content" meaning in English

{
  "etymology_text": "Coined by David Wiley as OpenContent in 1998.",
  "head_templates": [
    {
      "args": {
        "1": "-"
      },
      "expansion": "open content (uncountable)",
      "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"
        }
      ],
      "examples": [
        {
          "text": "Many websites are copyrighted and do not have any open content.",
          "type": "example"
        },
        {
          "text": "Wiktionary is a wiki-based open-content dictionary.",
          "type": "example"
        }
      ],
      "glosses": [
        "Creative work that others can freely and legally copy or modify."
      ],
      "id": "en-open_content-en-noun-69aTL6QY",
      "raw_glosses": [
        "(sometimes attributive) Creative work that others can freely and legally copy or modify."
      ],
      "tags": [
        "attributive",
        "sometimes",
        "uncountable"
      ],
      "wikipedia": [
        "David A. Wiley"
      ]
    }
  ],
  "word": "open content"
}

{
  "etymology_text": "Coined by David Wiley as OpenContent in 1998.",
  "head_templates": [
    {
      "args": {
        "1": "-"
      },
      "expansion": "open content (uncountable)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        "English entries with incorrect language header",
        "English lemmas",
        "English multiword terms",
        "English nouns",
        "English terms with usage examples",
        "English uncountable nouns"
      ],
      "examples": [
        {
          "text": "Many websites are copyrighted and do not have any open content.",
          "type": "example"
        },
        {
          "text": "Wiktionary is a wiki-based open-content dictionary.",
          "type": "example"
        }
      ],
      "glosses": [
        "Creative work that others can freely and legally copy or modify."
      ],
      "raw_glosses": [
        "(sometimes attributive) Creative work that others can freely and legally copy or modify."
      ],
      "tags": [
        "attributive",
        "sometimes",
        "uncountable"
      ],
      "wikipedia": [
        "David A. Wiley"
      ]
    }
  ],
  "word": "open content"
}