"mixed gauge" meaning in English

{
  "forms": [
    {
      "form": "mixed gauges",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "~"
      },
      "expansion": "mixed gauge (countable and uncountable, plural mixed gauges)",
      "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": "topical",
          "langcode": "en",
          "name": "Rail transportation",
          "orig": "en:Rail transportation",
          "parents": [
            "Transport",
            "All topics",
            "Fundamental"
          ],
          "source": "w"
        }
      ],
      "examples": [
        {
          "ref": "1940 May, “Pertinent Paragraphs: Old Time Permanent Way Devices”, in Railway Magazine, page 305",
          "text": "An ingenious method was used in the early days of mixed gauges on the Great Western Railway, by which narrow gauge and broad gauge trains could be sent on diverging paths without the use of ordinary switches controlled from a signalbox.",
          "type": "quotation"
        }
      ],
      "glosses": [
        "A description of a railway track with (usually) three rails, which enables trains of two different track gauges to run over it."
      ],
      "id": "en-mixed_gauge-en-noun-Uqag7CH7",
      "links": [
        [
          "rail transport",
          "rail transport"
        ]
      ],
      "raw_glosses": [
        "(rail transport) A description of a railway track with (usually) three rails, which enables trains of two different track gauges to run over it."
      ],
      "synonyms": [
        {
          "word": "dual gauge"
        }
      ],
      "tags": [
        "countable",
        "uncountable"
      ],
      "topics": [
        "rail-transport",
        "railways",
        "transport"
      ]
    }
  ],
  "word": "mixed gauge"
}

{
  "forms": [
    {
      "form": "mixed gauges",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "~"
      },
      "expansion": "mixed gauge (countable and uncountable, plural mixed gauges)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        "English countable nouns",
        "English entries with incorrect language header",
        "English lemmas",
        "English multiword terms",
        "English nouns",
        "English terms with quotations",
        "English uncountable nouns",
        "en:Rail transportation"
      ],
      "examples": [
        {
          "ref": "1940 May, “Pertinent Paragraphs: Old Time Permanent Way Devices”, in Railway Magazine, page 305",
          "text": "An ingenious method was used in the early days of mixed gauges on the Great Western Railway, by which narrow gauge and broad gauge trains could be sent on diverging paths without the use of ordinary switches controlled from a signalbox.",
          "type": "quotation"
        }
      ],
      "glosses": [
        "A description of a railway track with (usually) three rails, which enables trains of two different track gauges to run over it."
      ],
      "links": [
        [
          "rail transport",
          "rail transport"
        ]
      ],
      "raw_glosses": [
        "(rail transport) A description of a railway track with (usually) three rails, which enables trains of two different track gauges to run over it."
      ],
      "tags": [
        "countable",
        "uncountable"
      ],
      "topics": [
        "rail-transport",
        "railways",
        "transport"
      ]
    }
  ],
  "synonyms": [
    {
      "word": "dual gauge"
    }
  ],
  "word": "mixed gauge"
}