Definition of roll bar in English:

roll bar

Syllabification: roll bar

noun

A metal bar running up the sides and across the top of a vehicle, especially one used in motor sports, strengthening its frame and protecting the occupants should the vehicle overturn.
More example sentences
  • Copvertibles are more prone to flexing than are hardtops, so they will benefit the most from a well-built roll bar or cage.
  • There's a roll bar to offer some protection to the top of the cylinder head and a hefty foam bumper at the front of the car.
  • Start by contacting the manufacturer to find an authorized dealer in your area who can equip your tractor with a roll bar and a seat belt.

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