"Jefferson disk" meaning in English

{
  "etymology_text": "Commonly attributed to Thomas Jefferson.",
  "forms": [
    {
      "form": "Jefferson disks",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "Jefferson disk (plural Jefferson disks)",
      "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"
        },
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          "kind": "other",
          "name": "English entries with language name categories using raw markup",
          "parents": [
            "Entries with language name categories using raw markup",
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          "source": "w"
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        },
        {
          "kind": "other",
          "name": "Pages with 1 entry",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with entries",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "topical",
          "langcode": "en",
          "name": "Cryptography",
          "orig": "en:Cryptography",
          "parents": [
            "Computer science",
            "Formal sciences",
            "Mathematics",
            "Computing",
            "Sciences",
            "Technology",
            "All topics",
            "Fundamental"
          ],
          "source": "w"
        }
      ],
      "glosses": [
        "Any of a set of stackable disks, each having the letters of the alphabet arranged in some sequence around its edge, used in a cipher system."
      ],
      "id": "en-Jefferson_disk-en-noun-i81TwxwN",
      "links": [
        [
          "cryptography",
          "cryptography"
        ],
        [
          "stackable",
          "stackable"
        ]
      ],
      "raw_glosses": [
        "(historical, cryptography) Any of a set of stackable disks, each having the letters of the alphabet arranged in some sequence around its edge, used in a cipher system."
      ],
      "related": [
        {
          "word": "Bazeries cylinder"
        }
      ],
      "tags": [
        "historical"
      ],
      "topics": [
        "computing",
        "cryptography",
        "engineering",
        "mathematics",
        "natural-sciences",
        "physical-sciences",
        "sciences"
      ]
    }
  ],
  "word": "Jefferson disk"
}

{
  "etymology_text": "Commonly attributed to Thomas Jefferson.",
  "forms": [
    {
      "form": "Jefferson disks",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "Jefferson disk (plural Jefferson disks)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "related": [
    {
      "word": "Bazeries cylinder"
    }
  ],
  "senses": [
    {
      "categories": [
        "English countable nouns",
        "English entries with incorrect language header",
        "English entries with language name categories using raw markup",
        "English eponyms",
        "English lemmas",
        "English multiword terms",
        "English nouns",
        "English terms with historical senses",
        "English terms with non-redundant non-automated sortkeys",
        "Pages with 1 entry",
        "Pages with entries",
        "en:Cryptography"
      ],
      "glosses": [
        "Any of a set of stackable disks, each having the letters of the alphabet arranged in some sequence around its edge, used in a cipher system."
      ],
      "links": [
        [
          "cryptography",
          "cryptography"
        ],
        [
          "stackable",
          "stackable"
        ]
      ],
      "raw_glosses": [
        "(historical, cryptography) Any of a set of stackable disks, each having the letters of the alphabet arranged in some sequence around its edge, used in a cipher system."
      ],
      "tags": [
        "historical"
      ],
      "topics": [
        "computing",
        "cryptography",
        "engineering",
        "mathematics",
        "natural-sciences",
        "physical-sciences",
        "sciences"
      ]
    }
  ],
  "word": "Jefferson disk"
}