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a heavy steel transverse bar in the form of an inverted U rising from the framework of an automobile to prevent its occupants from being crushed if the vehicle rolls over.


Read Also:

  • Roll-book

    noun 1. a book in which attendance records are kept, as of students or employees.

  • Roll-cage

    noun 1. a system of metal bars fitted around the seating area of a vehicle, especially a racing car, to prevent the occupants from being crushed if the vehicle rolls over.

  • Roll-call

    noun 1. the calling of a list of names, as of soldiers or students, for checking attendance. 2. a military signal for this, as one given by a drum. 3. a voting process, especially in the U.S. Congress, in which legislators are called on by name and allowed either to cast their vote or to […]

  • Roll-cloud

    noun, Meteorology. 1. arcus. 2. rotor cloud.

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