helmet

US /ˈhel.mət/
UK /ˈhel.mət/
"helmet" picture
1.

casco, elmo

a hard or padded protective hat, a piece of armor designed to protect the head

:
Always wear a helmet when riding a bicycle.
Indossa sempre un casco quando vai in bicicletta.
The knight wore a shining helmet into battle.
Il cavaliere indossava un elmo lucente in battaglia.