"stopblock" meaning in English

{
  "etymology_templates": [
    {
      "args": {
        "1": "en",
        "2": "stop",
        "3": "block"
      },
      "expansion": "stop + block",
      "name": "af"
    }
  ],
  "etymology_text": "From stop + block.",
  "forms": [
    {
      "form": "stopblocks",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "stopblock (plural stopblocks)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "American English",
          "parents": [],
          "source": "w"
        },
        {
          "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": "2020 January 15, Nigel Harris, “HST's East Coast Farewell Tour”, in Rail, page 34",
          "text": "[...] we were losing speed for the descent into King's Cross Platform 8, where a large crowd had gathered. For the last time, an HST braked gently and smoothly to a stand at the stopblock, and it was all over.",
          "type": "quotation"
        }
      ],
      "glosses": [
        "An obstruction placed at the end of a railway track to prevent rail vehicles from going any further."
      ],
      "id": "en-stopblock-en-noun-aquauZZS",
      "links": [
        [
          "rail transport",
          "rail transport"
        ],
        [
          "obstruction",
          "obstruction"
        ],
        [
          "railway track",
          "railway track"
        ]
      ],
      "raw_glosses": [
        "(rail transport, especially US) An obstruction placed at the end of a railway track to prevent rail vehicles from going any further."
      ],
      "related": [
        {
          "word": "buffer stop"
        }
      ],
      "tags": [
        "US",
        "especially"
      ],
      "topics": [
        "rail-transport",
        "railways",
        "transport"
      ]
    }
  ],
  "word": "stopblock"
}

{
  "etymology_templates": [
    {
      "args": {
        "1": "en",
        "2": "stop",
        "3": "block"
      },
      "expansion": "stop + block",
      "name": "af"
    }
  ],
  "etymology_text": "From stop + block.",
  "forms": [
    {
      "form": "stopblocks",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "stopblock (plural stopblocks)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "related": [
    {
      "word": "buffer stop"
    }
  ],
  "senses": [
    {
      "categories": [
        "American English",
        "English compound terms",
        "English countable nouns",
        "English entries with incorrect language header",
        "English lemmas",
        "English nouns",
        "English terms with quotations",
        "en:Rail transportation"
      ],
      "examples": [
        {
          "ref": "2020 January 15, Nigel Harris, “HST's East Coast Farewell Tour”, in Rail, page 34",
          "text": "[...] we were losing speed for the descent into King's Cross Platform 8, where a large crowd had gathered. For the last time, an HST braked gently and smoothly to a stand at the stopblock, and it was all over.",
          "type": "quotation"
        }
      ],
      "glosses": [
        "An obstruction placed at the end of a railway track to prevent rail vehicles from going any further."
      ],
      "links": [
        [
          "rail transport",
          "rail transport"
        ],
        [
          "obstruction",
          "obstruction"
        ],
        [
          "railway track",
          "railway track"
        ]
      ],
      "raw_glosses": [
        "(rail transport, especially US) An obstruction placed at the end of a railway track to prevent rail vehicles from going any further."
      ],
      "tags": [
        "US",
        "especially"
      ],
      "topics": [
        "rail-transport",
        "railways",
        "transport"
      ]
    }
  ],
  "word": "stopblock"
}