when he wrecked his motorcycle, he still got his face scraped up and his jaw broken because he was only wearing a brain bucket instead of a full face helmet
a type of motorcycle helmet that enables motorcycle riders to be in compliance with the law where helmets are required, but offers inadequate protection, about that of a bicycle helmet
"when he wrecked his motorcycle, he still got his face scraped up and his jaw broken because he was only wearing a brain bucket instead of a full face helmet" What is the definition of "brain bucket"?