"horseshoe curve" meaning in English

{
  "forms": [
    {
      "form": "horseshoe curves",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "horseshoe curve (plural horseshoe curves)",
      "name": "en-noun"
    }
  ],
  "hyphenation": [
    "horse‧shoe‧curve"
  ],
  "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"
        }
      ],
      "coordinate_terms": [
        {
          "word": "hairpin bend"
        },
        {
          "word": "switchback"
        }
      ],
      "examples": [
        {
          "ref": "1939 Septenber, T. R. Perkins, “The G.W.R in West Wales”, in Railway Magazine, page 202",
          "text": "It only remains to notice briefly the branch from Whitland to Cardigan, which for a few miles pursues its tortuous and picturesque course along the valley of the Taf, thence rising by very severe gradients to Crymmych Arms, near to which station is a striking horse-shoe curve.",
          "type": "quotation"
        },
        {
          "ref": "1959, David P. Morgan, editor, Steam's Finest Hour, Kalmbach Publishing Co., pages 113, referring to the line between Mexico City and Toluca",
          "text": "This route was constructed in 1883 and involves a horseshoe curve, two tunnels, ruling grades of 3.76 per cent southbound and 3.91 per cent northbound (with patches up to 4.8 per cent), and severe curvature.",
          "type": "quotation"
        },
        {
          "ref": "2021 December 15, Robin Leleux, “Awards honour the best restoration projects: The Costain Structures Award: Auch Viaduct”, in RAIL, number 946, page 57",
          "text": "The viaduct has nine steel spans on a 16-chain (328-metre) curve and is one of two significant structures on the celebrated Horseshoe Curve.",
          "type": "quotation"
        }
      ],
      "glosses": [
        "A curve in the shape of a horseshoe, often on a railway, where hairpin bends cannot be used."
      ],
      "id": "en-horseshoe_curve-en-noun-6J~qbj-x",
      "links": [
        [
          "horseshoe",
          "horseshoe"
        ],
        [
          "railway",
          "railway"
        ],
        [
          "hairpin bend",
          "hairpin bend"
        ]
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "/ˈhɔːs.ʃuː kɜːv/",
      "tags": [
        "Received-Pronunciation"
      ]
    },
    {
      "ipa": "/ˈhɔːɹs.ʃuː kɝv/",
      "tags": [
        "US"
      ]
    }
  ],
  "word": "horseshoe curve"
}

{
  "coordinate_terms": [
    {
      "word": "hairpin bend"
    },
    {
      "word": "switchback"
    }
  ],
  "forms": [
    {
      "form": "horseshoe curves",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "horseshoe curve (plural horseshoe curves)",
      "name": "en-noun"
    }
  ],
  "hyphenation": [
    "horse‧shoe‧curve"
  ],
  "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 IPA pronunciation",
        "English terms with quotations",
        "en:Rail transportation"
      ],
      "examples": [
        {
          "ref": "1939 Septenber, T. R. Perkins, “The G.W.R in West Wales”, in Railway Magazine, page 202",
          "text": "It only remains to notice briefly the branch from Whitland to Cardigan, which for a few miles pursues its tortuous and picturesque course along the valley of the Taf, thence rising by very severe gradients to Crymmych Arms, near to which station is a striking horse-shoe curve.",
          "type": "quotation"
        },
        {
          "ref": "1959, David P. Morgan, editor, Steam's Finest Hour, Kalmbach Publishing Co., pages 113, referring to the line between Mexico City and Toluca",
          "text": "This route was constructed in 1883 and involves a horseshoe curve, two tunnels, ruling grades of 3.76 per cent southbound and 3.91 per cent northbound (with patches up to 4.8 per cent), and severe curvature.",
          "type": "quotation"
        },
        {
          "ref": "2021 December 15, Robin Leleux, “Awards honour the best restoration projects: The Costain Structures Award: Auch Viaduct”, in RAIL, number 946, page 57",
          "text": "The viaduct has nine steel spans on a 16-chain (328-metre) curve and is one of two significant structures on the celebrated Horseshoe Curve.",
          "type": "quotation"
        }
      ],
      "glosses": [
        "A curve in the shape of a horseshoe, often on a railway, where hairpin bends cannot be used."
      ],
      "links": [
        [
          "horseshoe",
          "horseshoe"
        ],
        [
          "railway",
          "railway"
        ],
        [
          "hairpin bend",
          "hairpin bend"
        ]
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "/ˈhɔːs.ʃuː kɜːv/",
      "tags": [
        "Received-Pronunciation"
      ]
    },
    {
      "ipa": "/ˈhɔːɹs.ʃuː kɝv/",
      "tags": [
        "US"
      ]
    }
  ],
  "word": "horseshoe curve"
}