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crash helmet

noun

Simple Definition of crash helmet

  • : a very strong, hard hat that is worn to protect your head when you are riding a bicycle, motorcycle, etc.

Source: Merriam-Webster's Learner's Dictionary

Full Definition of crash helmet

  1. :  a helmet that is worn (as by motorcyclists) as protection for the head in the event of an accident

Circa 1918

First Known Use of crash helmet

circa 1918


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