"emergency brake" meaning in English

{
  "forms": [
    {
      "form": "emergency brakes",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "emergency brake (plural emergency brakes)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [],
      "examples": [
        {
          "ref": "2020 June 17, Andrew Roden, “Brake pipe issue prompted Caledonian Sleeper runaway”, in Rail, page 12",
          "text": "At 0725, the driver operated the emergency brakes to no immediate effect. [...] As the train passed through Platform 11 at around 30mph, the train manager realised there was a problem and applied the emergency brake, bringing the train to a stand [...].",
          "type": "quotation"
        }
      ],
      "glosses": [
        "A brake which can be used by passengers in a vehicle to stop in event of an emergency."
      ],
      "id": "en-emergency_brake-en-noun-5zR9NfbR",
      "links": [
        [
          "brake",
          "brake"
        ],
        [
          "passenger",
          "passenger"
        ]
      ]
    },
    {
      "categories": [
        {
          "kind": "topical",
          "langcode": "en",
          "name": "Automotive",
          "orig": "en:Automotive",
          "parents": [
            "Transport",
            "All topics",
            "Fundamental"
          ],
          "source": "w"
        },
        {
          "_dis": "27 73",
          "kind": "other",
          "name": "English entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w+disamb"
        }
      ],
      "glosses": [
        "A parking brake."
      ],
      "id": "en-emergency_brake-en-noun-NuykFxq4",
      "links": [
        [
          "automotive",
          "automotive"
        ],
        [
          "parking brake",
          "parking brake"
        ]
      ],
      "raw_glosses": [
        "(automotive, dated) A parking brake."
      ],
      "tags": [
        "dated"
      ],
      "topics": [
        "automotive",
        "transport",
        "vehicles"
      ],
      "translations": [
        {
          "_dis1": "44 56",
          "code": "cs",
          "lang": "Czech",
          "sense": "type of brake",
          "tags": [
            "feminine"
          ],
          "word": "záchranná brzda"
        },
        {
          "_dis1": "44 56",
          "code": "da",
          "lang": "Danish",
          "sense": "type of brake",
          "tags": [
            "common-gender"
          ],
          "word": "nødbremse"
        },
        {
          "_dis1": "44 56",
          "code": "nl",
          "lang": "Dutch",
          "sense": "type of brake",
          "tags": [
            "feminine",
            "masculine"
          ],
          "word": "noodrem"
        },
        {
          "_dis1": "44 56",
          "code": "et",
          "lang": "Estonian",
          "sense": "type of brake",
          "word": "hädapidur"
        },
        {
          "_dis1": "44 56",
          "code": "fi",
          "lang": "Finnish",
          "sense": "type of brake",
          "word": "hätäjarru"
        },
        {
          "_dis1": "44 56",
          "code": "fr",
          "lang": "French",
          "sense": "type of brake",
          "tags": [
            "masculine"
          ],
          "word": "signal d’alarme"
        },
        {
          "_dis1": "44 56",
          "code": "de",
          "lang": "German",
          "sense": "type of brake",
          "tags": [
            "feminine"
          ],
          "word": "Notbremse"
        },
        {
          "_dis1": "44 56",
          "code": "hu",
          "lang": "Hungarian",
          "sense": "type of brake",
          "word": "vészfék"
        },
        {
          "_dis1": "44 56",
          "code": "smn",
          "lang": "Inari Sami",
          "sense": "type of brake",
          "word": "etikoosân"
        },
        {
          "_dis1": "44 56",
          "code": "smn",
          "lang": "Inari Sami",
          "sense": "type of brake",
          "word": "etikooccâm"
        },
        {
          "_dis1": "44 56",
          "code": "se",
          "lang": "Northern Sami",
          "sense": "type of brake",
          "word": "heahtegoazan"
        },
        {
          "_dis1": "44 56",
          "code": "nb",
          "lang": "Norwegian Bokmål",
          "sense": "type of brake",
          "tags": [
            "masculine"
          ],
          "word": "nødbrems"
        },
        {
          "_dis1": "44 56",
          "code": "ru",
          "lang": "Russian",
          "roman": "stop-kran",
          "sense": "type of brake",
          "word": "стоп-кран"
        },
        {
          "_dis1": "44 56",
          "code": "sms",
          "lang": "Skolt Sami",
          "sense": "type of brake",
          "word": "jieʹttvaull"
        },
        {
          "_dis1": "44 56",
          "code": "sv",
          "lang": "Swedish",
          "sense": "type of brake",
          "tags": [
            "common-gender"
          ],
          "word": "nödbroms"
        },
        {
          "_dis1": "44 56",
          "code": "tr",
          "lang": "Turkish",
          "sense": "type of brake",
          "word": "imdat freni"
        }
      ]
    }
  ],
  "word": "emergency brake"
}

{
  "categories": [
    "English countable nouns",
    "English entries with incorrect language header",
    "English lemmas",
    "English multiword terms",
    "English nouns"
  ],
  "forms": [
    {
      "form": "emergency brakes",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "emergency brake (plural emergency brakes)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        "English terms with quotations"
      ],
      "examples": [
        {
          "ref": "2020 June 17, Andrew Roden, “Brake pipe issue prompted Caledonian Sleeper runaway”, in Rail, page 12",
          "text": "At 0725, the driver operated the emergency brakes to no immediate effect. [...] As the train passed through Platform 11 at around 30mph, the train manager realised there was a problem and applied the emergency brake, bringing the train to a stand [...].",
          "type": "quotation"
        }
      ],
      "glosses": [
        "A brake which can be used by passengers in a vehicle to stop in event of an emergency."
      ],
      "links": [
        [
          "brake",
          "brake"
        ],
        [
          "passenger",
          "passenger"
        ]
      ]
    },
    {
      "categories": [
        "English dated terms",
        "en:Automotive"
      ],
      "glosses": [
        "A parking brake."
      ],
      "links": [
        [
          "automotive",
          "automotive"
        ],
        [
          "parking brake",
          "parking brake"
        ]
      ],
      "raw_glosses": [
        "(automotive, dated) A parking brake."
      ],
      "tags": [
        "dated"
      ],
      "topics": [
        "automotive",
        "transport",
        "vehicles"
      ]
    }
  ],
  "translations": [
    {
      "code": "cs",
      "lang": "Czech",
      "sense": "type of brake",
      "tags": [
        "feminine"
      ],
      "word": "záchranná brzda"
    },
    {
      "code": "da",
      "lang": "Danish",
      "sense": "type of brake",
      "tags": [
        "common-gender"
      ],
      "word": "nødbremse"
    },
    {
      "code": "nl",
      "lang": "Dutch",
      "sense": "type of brake",
      "tags": [
        "feminine",
        "masculine"
      ],
      "word": "noodrem"
    },
    {
      "code": "et",
      "lang": "Estonian",
      "sense": "type of brake",
      "word": "hädapidur"
    },
    {
      "code": "fi",
      "lang": "Finnish",
      "sense": "type of brake",
      "word": "hätäjarru"
    },
    {
      "code": "fr",
      "lang": "French",
      "sense": "type of brake",
      "tags": [
        "masculine"
      ],
      "word": "signal d’alarme"
    },
    {
      "code": "de",
      "lang": "German",
      "sense": "type of brake",
      "tags": [
        "feminine"
      ],
      "word": "Notbremse"
    },
    {
      "code": "hu",
      "lang": "Hungarian",
      "sense": "type of brake",
      "word": "vészfék"
    },
    {
      "code": "smn",
      "lang": "Inari Sami",
      "sense": "type of brake",
      "word": "etikoosân"
    },
    {
      "code": "smn",
      "lang": "Inari Sami",
      "sense": "type of brake",
      "word": "etikooccâm"
    },
    {
      "code": "se",
      "lang": "Northern Sami",
      "sense": "type of brake",
      "word": "heahtegoazan"
    },
    {
      "code": "nb",
      "lang": "Norwegian Bokmål",
      "sense": "type of brake",
      "tags": [
        "masculine"
      ],
      "word": "nødbrems"
    },
    {
      "code": "ru",
      "lang": "Russian",
      "roman": "stop-kran",
      "sense": "type of brake",
      "word": "стоп-кран"
    },
    {
      "code": "sms",
      "lang": "Skolt Sami",
      "sense": "type of brake",
      "word": "jieʹttvaull"
    },
    {
      "code": "sv",
      "lang": "Swedish",
      "sense": "type of brake",
      "tags": [
        "common-gender"
      ],
      "word": "nödbroms"
    },
    {
      "code": "tr",
      "lang": "Turkish",
      "sense": "type of brake",
      "word": "imdat freni"
    }
  ],
  "word": "emergency brake"
}