roll bar
or roll·bar
noun
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.
Origin of roll bar
First recorded in 1950–55
Words nearby roll bar
rolfing,
roll,
roll around,
roll back,
roll bag,
roll bar,
roll book,
roll cage,
roll call,
roll cloud,
roll film