"letters close" meaning in English

{
  "antonyms": [
    {
      "word": "letters patent"
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "p"
      },
      "expansion": "letters close pl (plural only)",
      "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"
        },
        {
          "kind": "other",
          "name": "English pluralia tantum",
          "parents": [
            "Pluralia tantum",
            "Nouns",
            "Lemmas"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Entries with translation boxes",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with 1 entry",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with entries",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Terms with Finnish translations",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Terms with Latin translations",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Terms with Mandarin translations",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "topical",
          "langcode": "en",
          "name": "Law",
          "orig": "en:Law",
          "parents": [
            "Justice",
            "Society",
            "All topics",
            "Fundamental"
          ],
          "source": "w"
        }
      ],
      "glosses": [
        "A sealed legal document, once issued by a monarch or government, granting a right, title etc to a person or corporation."
      ],
      "id": "en-letters_close-en-noun-Mj4Es-KT",
      "links": [
        [
          "law",
          "law#English"
        ],
        [
          "sealed",
          "sealed"
        ],
        [
          "legal",
          "legal"
        ],
        [
          "document",
          "document"
        ],
        [
          "monarch",
          "monarch"
        ],
        [
          "government",
          "government"
        ],
        [
          "right",
          "right"
        ],
        [
          "title",
          "title"
        ],
        [
          "person",
          "person"
        ],
        [
          "corporation",
          "corporation"
        ]
      ],
      "raw_glosses": [
        "(law, plural only) A sealed legal document, once issued by a monarch or government, granting a right, title etc to a person or corporation."
      ],
      "tags": [
        "plural",
        "plural-only"
      ],
      "topics": [
        "law"
      ],
      "translations": [
        {
          "code": "cmn",
          "lang": "Chinese Mandarin",
          "sense": "document",
          "word": "特許狀"
        },
        {
          "code": "cmn",
          "lang": "Chinese Mandarin",
          "sense": "document",
          "word": "特许状"
        },
        {
          "code": "fi",
          "lang": "Finnish",
          "sense": "document",
          "word": "myöntökirja"
        },
        {
          "code": "la",
          "lang": "Latin",
          "sense": "document",
          "tags": [
            "feminine",
            "plural"
          ],
          "word": "litterae clausae"
        }
      ],
      "wikipedia": [
        "letters close"
      ]
    }
  ],
  "word": "letters close"
}

{
  "antonyms": [
    {
      "word": "letters patent"
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "p"
      },
      "expansion": "letters close pl (plural only)",
      "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 pluralia tantum",
        "Entries with translation boxes",
        "Pages with 1 entry",
        "Pages with entries",
        "Terms with Finnish translations",
        "Terms with Latin translations",
        "Terms with Mandarin translations",
        "en:Law"
      ],
      "glosses": [
        "A sealed legal document, once issued by a monarch or government, granting a right, title etc to a person or corporation."
      ],
      "links": [
        [
          "law",
          "law#English"
        ],
        [
          "sealed",
          "sealed"
        ],
        [
          "legal",
          "legal"
        ],
        [
          "document",
          "document"
        ],
        [
          "monarch",
          "monarch"
        ],
        [
          "government",
          "government"
        ],
        [
          "right",
          "right"
        ],
        [
          "title",
          "title"
        ],
        [
          "person",
          "person"
        ],
        [
          "corporation",
          "corporation"
        ]
      ],
      "raw_glosses": [
        "(law, plural only) A sealed legal document, once issued by a monarch or government, granting a right, title etc to a person or corporation."
      ],
      "tags": [
        "plural",
        "plural-only"
      ],
      "topics": [
        "law"
      ],
      "wikipedia": [
        "letters close"
      ]
    }
  ],
  "translations": [
    {
      "code": "cmn",
      "lang": "Chinese Mandarin",
      "sense": "document",
      "word": "特許狀"
    },
    {
      "code": "cmn",
      "lang": "Chinese Mandarin",
      "sense": "document",
      "word": "特许状"
    },
    {
      "code": "fi",
      "lang": "Finnish",
      "sense": "document",
      "word": "myöntökirja"
    },
    {
      "code": "la",
      "lang": "Latin",
      "sense": "document",
      "tags": [
        "feminine",
        "plural"
      ],
      "word": "litterae clausae"
    }
  ],
  "word": "letters close"
}