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Denotation vs. Connotation

roll bar

or rollbar

noun
1.
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
1950-1955
1950-55
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
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4
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