"bullhead rail" meaning in English

{
  "forms": [
    {
      "form": "bullhead rails",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "bullhead rail (plural bullhead rails)",
      "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": "Pages with 1 entry",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with entries",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "topical",
          "langcode": "en",
          "name": "Rail transportation",
          "orig": "en:Rail transportation",
          "parents": [
            "Transport",
            "All topics",
            "Fundamental"
          ],
          "source": "w"
        }
      ],
      "examples": [
        {
          "ref": "1979 August, Michael Harris, “A line for all reasons: the North Yorkshire Moors Railway”, in Railway World, page 412:",
          "text": "With second-hand bullhead rail almost unobtainable, the NYMR has been forced to go for new flat-bottom rail and orders are being placed; 58 fb rails are already en route to the railway.",
          "type": "quote"
        },
        {
          "ref": "2020 November 18, Howard Johnston, “Regional News: Eastern: Esk Valley”, in RAIL, page 26:",
          "text": "Network Rail has donated two miles of replaced bullhead rail from the Middlesbrough-Whitby line to the North Yorkshire Moors Railway for reuse or onward sale.",
          "type": "quote"
        },
        {
          "ref": "2023 December 27, Ben Jones, “Inside Sellafield... by rail”, in RAIL, number 999, page 23:",
          "text": "\"When we upgraded the track, we couldn't use flat bottom rail, as some of the curves are too tight, so we are one of the few places still using bullhead rail.",
          "type": "quote"
        }
      ],
      "glosses": [
        "A type of rail, most commonly used in the United Kingdom (now obsolescent), with a head and foot similar in cross-section, that is supported in cast-iron chairs and secured in the chairs by wooden wedges (known as \"keys\") or steel springs."
      ],
      "id": "en-bullhead_rail-en-noun-7-Qt~U2D",
      "links": [
        [
          "rail transport",
          "rail transport"
        ],
        [
          "rail",
          "rail"
        ],
        [
          "obsolescent",
          "obsolescent"
        ],
        [
          "head",
          "head"
        ],
        [
          "foot",
          "foot"
        ],
        [
          "cast-iron",
          "cast-iron"
        ],
        [
          "chair",
          "chair"
        ],
        [
          "wedge",
          "wedge"
        ],
        [
          "key",
          "key"
        ],
        [
          "spring",
          "spring"
        ]
      ],
      "raw_glosses": [
        "(rail transport) A type of rail, most commonly used in the United Kingdom (now obsolescent), with a head and foot similar in cross-section, that is supported in cast-iron chairs and secured in the chairs by wooden wedges (known as \"keys\") or steel springs."
      ],
      "topics": [
        "rail-transport",
        "railways",
        "transport"
      ]
    }
  ],
  "word": "bullhead rail"
}

{
  "forms": [
    {
      "form": "bullhead rails",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "bullhead rail (plural bullhead rails)",
      "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",
        "Pages with 1 entry",
        "Pages with entries",
        "en:Rail transportation"
      ],
      "examples": [
        {
          "ref": "1979 August, Michael Harris, “A line for all reasons: the North Yorkshire Moors Railway”, in Railway World, page 412:",
          "text": "With second-hand bullhead rail almost unobtainable, the NYMR has been forced to go for new flat-bottom rail and orders are being placed; 58 fb rails are already en route to the railway.",
          "type": "quote"
        },
        {
          "ref": "2020 November 18, Howard Johnston, “Regional News: Eastern: Esk Valley”, in RAIL, page 26:",
          "text": "Network Rail has donated two miles of replaced bullhead rail from the Middlesbrough-Whitby line to the North Yorkshire Moors Railway for reuse or onward sale.",
          "type": "quote"
        },
        {
          "ref": "2023 December 27, Ben Jones, “Inside Sellafield... by rail”, in RAIL, number 999, page 23:",
          "text": "\"When we upgraded the track, we couldn't use flat bottom rail, as some of the curves are too tight, so we are one of the few places still using bullhead rail.",
          "type": "quote"
        }
      ],
      "glosses": [
        "A type of rail, most commonly used in the United Kingdom (now obsolescent), with a head and foot similar in cross-section, that is supported in cast-iron chairs and secured in the chairs by wooden wedges (known as \"keys\") or steel springs."
      ],
      "links": [
        [
          "rail transport",
          "rail transport"
        ],
        [
          "rail",
          "rail"
        ],
        [
          "obsolescent",
          "obsolescent"
        ],
        [
          "head",
          "head"
        ],
        [
          "foot",
          "foot"
        ],
        [
          "cast-iron",
          "cast-iron"
        ],
        [
          "chair",
          "chair"
        ],
        [
          "wedge",
          "wedge"
        ],
        [
          "key",
          "key"
        ],
        [
          "spring",
          "spring"
        ]
      ],
      "raw_glosses": [
        "(rail transport) A type of rail, most commonly used in the United Kingdom (now obsolescent), with a head and foot similar in cross-section, that is supported in cast-iron chairs and secured in the chairs by wooden wedges (known as \"keys\") or steel springs."
      ],
      "topics": [
        "rail-transport",
        "railways",
        "transport"
      ]
    }
  ],
  "word": "bullhead rail"
}