a helmet for protecting the head in the event of an accident, worn by motorcyclists, automobile racers, etc.
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- crash blossom,
- crash boat,
- crash cart,
- crash course,
- crash dive,
- crash of 1929, stock market,
- crash out,
- crash pad,
- crash program,
- crash team
Origin of crash helmet
First recorded in 1915–20
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
a padded helmet worn for motorcycling, flying, bobsleighing, etc, to protect the head in a crash
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012