"mare clausum" meaning in English

{
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        "2": "la",
        "3": "-"
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      "expansion": "Latin",
      "name": "uder"
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  "etymology_text": "Latin, literally \"closed sea\".",
  "head_templates": [
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      "args": {
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      "expansion": "mare clausum",
      "name": "en-noun"
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  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
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          "name": "English entries with incorrect language header",
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          "langcode": "en",
          "name": "International law",
          "orig": "en:International law",
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      ],
      "glosses": [
        "A body of water within the jurisdiction of a particular nation, and not part of the open sea."
      ],
      "id": "en-mare_clausum-en-noun-vZb4J034",
      "links": [
        [
          "international law",
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        [
          "body",
          "body"
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        [
          "water",
          "water"
        ],
        [
          "jurisdiction",
          "jurisdiction"
        ],
        [
          "nation",
          "nation"
        ],
        [
          "open sea",
          "open sea"
        ]
      ],
      "qualifier": "international law",
      "raw_glosses": [
        "(international law) A body of water within the jurisdiction of a particular nation, and not part of the open sea."
      ],
      "related": [
        {
          "word": "mare liberum"
        }
      ]
    }
  ],
  "word": "mare clausum"
}

{
  "etymology_templates": [
    {
      "args": {
        "1": "en",
        "2": "la",
        "3": "-"
      },
      "expansion": "Latin",
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    }
  ],
  "etymology_text": "Latin, literally \"closed sea\".",
  "head_templates": [
    {
      "args": {
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      "expansion": "mare clausum",
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  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "related": [
    {
      "word": "mare liberum"
    }
  ],
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    {
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        "English countable nouns",
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        "en:International law"
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      "glosses": [
        "A body of water within the jurisdiction of a particular nation, and not part of the open sea."
      ],
      "links": [
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          "international law",
          "international law"
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        [
          "body",
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        [
          "jurisdiction",
          "jurisdiction"
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        [
          "nation",
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      ],
      "qualifier": "international law",
      "raw_glosses": [
        "(international law) A body of water within the jurisdiction of a particular nation, and not part of the open sea."
      ]
    }
  ],
  "word": "mare clausum"
}