"2-4-2" meaning in English

{
  "forms": [
    {
      "form": "2-4-2s",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
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      "args": {},
      "expansion": "2-4-2 (plural 2-4-2s)",
      "name": "en-noun"
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  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
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        {
          "kind": "topical",
          "langcode": "en",
          "name": "Rail transportation",
          "orig": "en:Rail transportation",
          "parents": [
            "Transport",
            "All topics",
            "Fundamental"
          ],
          "source": "w"
        }
      ],
      "examples": [
        {
          "ref": "2005, Jim Harter, World Railways of the Nineteenth Century: A Pictorial History in Victorian Engravings, page 76",
          "text": "In 1889 a severe passenger train wreck occurred near Dijon, when a 2-4-2 engine derailed while going full speed downhill.",
          "type": "quotation"
        },
        {
          "ref": "2003, Robert H. Schleicher, Modern Lionel Trains, page 48",
          "text": "Lionel's first tinplate reproduction of a standard Gauge locomotive was a black 2-4-2 steam engine with three red passenger cars.",
          "type": "quotation"
        },
        {
          "ref": "1962, Geoffrey Freeman Allen, Trains Illustrated Annual, page 25",
          "text": "Returning in the works staff train to Kingsbridge behind 2-4-2 tank No. 41, we proceeded to Broadstone, former headquarters of the M.G.W.R.",
          "type": "quotation"
        },
        {
          "ref": "1952, Cuthbert Hamilton Ellis, The Beauty of Old Trains, page 117",
          "text": "The 2-4-2 tank engines of the Great Eastern and the London and North Western were simply adaptations of 2-4-0 main-line engines; the 0-4-4 tank engine owed its parentage to the archaic 0-4-2 mixed traffic.",
          "type": "quotation"
        }
      ],
      "glosses": [
        "Under the Whyte notation system, a steam locomotive that has two leading wheels arranged in a leading truck, four coupled driving wheels and two trailing wheels in a trailing truck."
      ],
      "id": "en-2-4-2-en-noun-TAfjEZ8E",
      "links": [
        [
          "steam locomotive",
          "steam locomotive"
        ],
        [
          "leading wheel",
          "leading wheel"
        ],
        [
          "leading truck",
          "leading truck"
        ],
        [
          "driving wheel",
          "driving wheel"
        ],
        [
          "trailing wheel",
          "trailing wheel"
        ],
        [
          "trailing truck",
          "trailing truck"
        ]
      ]
    }
  ],
  "word": "2-4-2"
}

{
  "forms": [
    {
      "form": "2-4-2s",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "2-4-2 (plural 2-4-2s)",
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  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
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        "English terms with quotations",
        "English words without vowels",
        "Quotation templates to be cleaned",
        "en:Rail transportation"
      ],
      "examples": [
        {
          "ref": "2005, Jim Harter, World Railways of the Nineteenth Century: A Pictorial History in Victorian Engravings, page 76",
          "text": "In 1889 a severe passenger train wreck occurred near Dijon, when a 2-4-2 engine derailed while going full speed downhill.",
          "type": "quotation"
        },
        {
          "ref": "2003, Robert H. Schleicher, Modern Lionel Trains, page 48",
          "text": "Lionel's first tinplate reproduction of a standard Gauge locomotive was a black 2-4-2 steam engine with three red passenger cars.",
          "type": "quotation"
        },
        {
          "ref": "1962, Geoffrey Freeman Allen, Trains Illustrated Annual, page 25",
          "text": "Returning in the works staff train to Kingsbridge behind 2-4-2 tank No. 41, we proceeded to Broadstone, former headquarters of the M.G.W.R.",
          "type": "quotation"
        },
        {
          "ref": "1952, Cuthbert Hamilton Ellis, The Beauty of Old Trains, page 117",
          "text": "The 2-4-2 tank engines of the Great Eastern and the London and North Western were simply adaptations of 2-4-0 main-line engines; the 0-4-4 tank engine owed its parentage to the archaic 0-4-2 mixed traffic.",
          "type": "quotation"
        }
      ],
      "glosses": [
        "Under the Whyte notation system, a steam locomotive that has two leading wheels arranged in a leading truck, four coupled driving wheels and two trailing wheels in a trailing truck."
      ],
      "links": [
        [
          "steam locomotive",
          "steam locomotive"
        ],
        [
          "leading wheel",
          "leading wheel"
        ],
        [
          "leading truck",
          "leading truck"
        ],
        [
          "driving wheel",
          "driving wheel"
        ],
        [
          "trailing wheel",
          "trailing wheel"
        ],
        [
          "trailing truck",
          "trailing truck"
        ]
      ]
    }
  ],
  "word": "2-4-2"
}