"crash gearbox" meaning in English

{
  "forms": [
    {
      "form": "crash gearboxes",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "crash gearbox (plural crash gearboxes)",
      "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": "Automotive",
          "orig": "en:Automotive",
          "parents": [
            "Transport",
            "All topics",
            "Fundamental"
          ],
          "source": "w"
        }
      ],
      "glosses": [
        "A transmission with a sliding mesh, used in older vehicles; gear changes are often accompanied by loud noises."
      ],
      "id": "en-crash_gearbox-en-noun-NHxBP5ty",
      "links": [
        [
          "automotive",
          "automotive"
        ],
        [
          "transmission",
          "transmission"
        ],
        [
          "vehicle",
          "vehicle"
        ],
        [
          "gear",
          "gear"
        ]
      ],
      "raw_glosses": [
        "(automotive, informal) A transmission with a sliding mesh, used in older vehicles; gear changes are often accompanied by loud noises."
      ],
      "synonyms": [
        {
          "word": "crash box"
        }
      ],
      "tags": [
        "informal"
      ],
      "topics": [
        "automotive",
        "transport",
        "vehicles"
      ],
      "wikipedia": [
        "crash gearbox"
      ]
    }
  ],
  "word": "crash gearbox"
}

{
  "forms": [
    {
      "form": "crash gearboxes",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "crash gearbox (plural crash gearboxes)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        "English countable nouns",
        "English entries with incorrect language header",
        "English informal terms",
        "English lemmas",
        "English multiword terms",
        "English nouns",
        "en:Automotive"
      ],
      "glosses": [
        "A transmission with a sliding mesh, used in older vehicles; gear changes are often accompanied by loud noises."
      ],
      "links": [
        [
          "automotive",
          "automotive"
        ],
        [
          "transmission",
          "transmission"
        ],
        [
          "vehicle",
          "vehicle"
        ],
        [
          "gear",
          "gear"
        ]
      ],
      "raw_glosses": [
        "(automotive, informal) A transmission with a sliding mesh, used in older vehicles; gear changes are often accompanied by loud noises."
      ],
      "tags": [
        "informal"
      ],
      "topics": [
        "automotive",
        "transport",
        "vehicles"
      ],
      "wikipedia": [
        "crash gearbox"
      ]
    }
  ],
  "synonyms": [
    {
      "word": "crash box"
    }
  ],
  "word": "crash gearbox"
}