"red button" meaning in English

{
  "forms": [
    {
      "form": "red buttons",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "red button (plural red buttons)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "British English",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "English entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with 1 entry",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with entries",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "topical",
          "langcode": "en",
          "name": "Finance",
          "orig": "en:Finance",
          "parents": [
            "Business",
            "Economics",
            "Society",
            "Social sciences",
            "All topics",
            "Sciences",
            "Fundamental"
          ],
          "source": "w"
        }
      ],
      "examples": [
        {
          "text": "Coordinate term: blue button"
        },
        {
          "ref": "1954, Margaret Shelly Rix, Stock Market Economics, page 17:",
          "text": "Unauthorized clerks or Blue Buttons can make enquiries in the House and ask for prices but may not enter into any contract, while Red Buttons are clerks entitled to work in the Settling or checking Room.",
          "type": "quote"
        },
        {
          "ref": "1964, David Eugene Spray, The Principal Stock Exchanges of the World, page 189:",
          "text": "The third and junior category, the Settling Room clerks wear a red badge and are known as \"red buttons.\"",
          "type": "quote"
        }
      ],
      "glosses": [
        "A clerk employed in the settling room of the stock exchange."
      ],
      "id": "en-red_button-en-noun-QQv5saVv",
      "links": [
        [
          "finance",
          "finance#Noun"
        ],
        [
          "clerk",
          "clerk"
        ],
        [
          "settling room",
          "settling room"
        ],
        [
          "stock exchange",
          "stock exchange"
        ]
      ],
      "raw_glosses": [
        "(UK, finance, historical) A clerk employed in the settling room of the stock exchange."
      ],
      "tags": [
        "UK",
        "historical"
      ],
      "topics": [
        "business",
        "finance"
      ]
    }
  ],
  "word": "red button"
}

{
  "forms": [
    {
      "form": "red buttons",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "red button (plural red buttons)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        "British English",
        "English countable nouns",
        "English entries with incorrect language header",
        "English lemmas",
        "English multiword terms",
        "English nouns",
        "English terms with historical senses",
        "English terms with quotations",
        "Pages with 1 entry",
        "Pages with entries",
        "Quotation templates to be cleaned",
        "en:Finance"
      ],
      "examples": [
        {
          "text": "Coordinate term: blue button"
        },
        {
          "ref": "1954, Margaret Shelly Rix, Stock Market Economics, page 17:",
          "text": "Unauthorized clerks or Blue Buttons can make enquiries in the House and ask for prices but may not enter into any contract, while Red Buttons are clerks entitled to work in the Settling or checking Room.",
          "type": "quote"
        },
        {
          "ref": "1964, David Eugene Spray, The Principal Stock Exchanges of the World, page 189:",
          "text": "The third and junior category, the Settling Room clerks wear a red badge and are known as \"red buttons.\"",
          "type": "quote"
        }
      ],
      "glosses": [
        "A clerk employed in the settling room of the stock exchange."
      ],
      "links": [
        [
          "finance",
          "finance#Noun"
        ],
        [
          "clerk",
          "clerk"
        ],
        [
          "settling room",
          "settling room"
        ],
        [
          "stock exchange",
          "stock exchange"
        ]
      ],
      "raw_glosses": [
        "(UK, finance, historical) A clerk employed in the settling room of the stock exchange."
      ],
      "tags": [
        "UK",
        "historical"
      ],
      "topics": [
        "business",
        "finance"
      ]
    }
  ],
  "word": "red button"
}