A helmet intended to be worn while riding a bicycle.

Protective headgear worn by a construction worker; a hard hat.

plural of construction helmet

plural of safety helmet

Any helmet designed to protect the head from accidental injury, such as a bicycle helmet or construction helmet.

plural of crash helmet

A helmet worn by motorcyclists worn to protect the head in case of an accident.

plural of close helmet

(slang) The glans penis.

plural of helmet streamer