crash helmet

US /ˈkræʃ ˌhel.mɪt/
UK /ˈkræʃ ˌhel.mɪt/
"crash helmet" picture
1.

casco, casco de seguridad

a hard hat worn by motorcyclists, racing drivers, etc., to protect the head in the event of a crash

:
Always wear a crash helmet when riding a motorcycle.
Siempre use un casco al conducir una motocicleta.
The cyclist's life was saved by his sturdy crash helmet.
La vida del ciclista fue salvada por su resistente casco.