"long thousand" meaning in English

{
  "forms": [
    {
      "form": "long thousands",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "long thousand (plural long thousands)",
      "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 entries with topic categories using raw markup",
          "parents": [
            "Entries with topic categories using raw markup",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "English terms with non-redundant non-automated sortkeys",
          "parents": [
            "Terms with non-redundant non-automated sortkeys",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "topical",
          "langcode": "en",
          "name": "Historical numbers",
          "orig": "en:Historical numbers",
          "parents": [
            "Numbers",
            "All topics",
            "Terms by semantic function",
            "Fundamental"
          ],
          "source": "w"
        }
      ],
      "glosses": [
        "One thousand and two hundred - 1200, that is, ten times one long hundred."
      ],
      "id": "en-long_thousand-en-noun-QCGV6v0t",
      "links": [
        [
          "long hundred",
          "long hundred"
        ]
      ],
      "raw_glosses": [
        "(historical) One thousand and two hundred - 1200, that is, ten times one long hundred."
      ],
      "tags": [
        "historical"
      ]
    }
  ],
  "word": "long thousand"
}

{
  "forms": [
    {
      "form": "long thousands",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "long thousand (plural long thousands)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        "English countable nouns",
        "English entries with incorrect language header",
        "English entries with topic categories using raw markup",
        "English lemmas",
        "English multiword terms",
        "English nouns",
        "English terms with historical senses",
        "English terms with non-redundant non-automated sortkeys",
        "en:Historical numbers"
      ],
      "glosses": [
        "One thousand and two hundred - 1200, that is, ten times one long hundred."
      ],
      "links": [
        [
          "long hundred",
          "long hundred"
        ]
      ],
      "raw_glosses": [
        "(historical) One thousand and two hundred - 1200, that is, ten times one long hundred."
      ],
      "tags": [
        "historical"
      ]
    }
  ],
  "word": "long thousand"
}