"roll bar" meaning in English

{
  "forms": [
    {
      "form": "roll bars",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "roll bar (plural roll bars)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [],
      "examples": [
        {
          "ref": "2002, Bobby Alvarez, Ghost Runner on Second, page 163:",
          "text": "Once the two left wheels departed the surface, Travis knew he was in for trouble. Since there wasn't a roll bar on the SUV, the roof was probably going to collapse on his head when it contacted the asphalt.",
          "type": "quote"
        }
      ],
      "glosses": [
        "A strong U-shaped bar fastened to the frame of a vehicle, such as an off-road vehicle or a race car to protect the driver and passengers from being crushed in the event that the vehicle rolls over."
      ],
      "id": "en-roll_bar-en-noun-c74KmvxY"
    },
    {
      "categories": [
        {
          "_dis": "28 72",
          "kind": "other",
          "name": "English entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w+disamb"
        },
        {
          "_dis": "29 71",
          "kind": "other",
          "name": "Pages with 1 entry",
          "parents": [],
          "source": "w+disamb"
        },
        {
          "_dis": "29 71",
          "kind": "other",
          "name": "Pages with entries",
          "parents": [],
          "source": "w+disamb"
        },
        {
          "_dis": "15 85",
          "kind": "topical",
          "langcode": "en",
          "name": "Automotive",
          "orig": "en:Automotive",
          "parents": [
            "Transport",
            "All topics",
            "Fundamental"
          ],
          "source": "w+disamb"
        }
      ],
      "examples": [
        {
          "ref": "2004, Jonathan Noble, Mark Hughes, Formula One Racing For Dummies, page 65:",
          "text": "The roll bar is a metal bar linking one side of the suspension to the other. It limits how much the car rolls during cornering.",
          "type": "quote"
        }
      ],
      "glosses": [
        "An anti-roll bar."
      ],
      "id": "en-roll_bar-en-noun-KAyJgIqg",
      "links": [
        [
          "anti-roll bar",
          "anti-roll bar"
        ]
      ],
      "related": [
        {
          "_dis1": "37 63",
          "word": "roll cage"
        }
      ],
      "synonyms": [
        {
          "_dis1": "37 63",
          "word": "rollbar"
        },
        {
          "_dis1": "37 63",
          "word": "roll-bar"
        }
      ]
    }
  ],
  "word": "roll bar"
}

{
  "categories": [
    "English countable nouns",
    "English entries with incorrect language header",
    "English lemmas",
    "English multiword terms",
    "English nouns",
    "Pages with 1 entry",
    "Pages with entries",
    "en:Automotive"
  ],
  "forms": [
    {
      "form": "roll bars",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "roll bar (plural roll bars)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "related": [
    {
      "word": "roll cage"
    }
  ],
  "senses": [
    {
      "categories": [
        "English terms with quotations"
      ],
      "examples": [
        {
          "ref": "2002, Bobby Alvarez, Ghost Runner on Second, page 163:",
          "text": "Once the two left wheels departed the surface, Travis knew he was in for trouble. Since there wasn't a roll bar on the SUV, the roof was probably going to collapse on his head when it contacted the asphalt.",
          "type": "quote"
        }
      ],
      "glosses": [
        "A strong U-shaped bar fastened to the frame of a vehicle, such as an off-road vehicle or a race car to protect the driver and passengers from being crushed in the event that the vehicle rolls over."
      ]
    },
    {
      "categories": [
        "English terms with quotations"
      ],
      "examples": [
        {
          "ref": "2004, Jonathan Noble, Mark Hughes, Formula One Racing For Dummies, page 65:",
          "text": "The roll bar is a metal bar linking one side of the suspension to the other. It limits how much the car rolls during cornering.",
          "type": "quote"
        }
      ],
      "glosses": [
        "An anti-roll bar."
      ],
      "links": [
        [
          "anti-roll bar",
          "anti-roll bar"
        ]
      ]
    }
  ],
  "synonyms": [
    {
      "word": "rollbar"
    },
    {
      "word": "roll-bar"
    }
  ],
  "word": "roll bar"
}