helmetとは何ですか？
helmetとは何ですか？
- The headgear with a glass mask worn by deep-sea divers.
- A head covering of hard material, such as leather, metal, or plastic, worn by football players, firefighters, construction workers, motorcyclists, and others to protect the head.
- A pith helmet; a topi.
- A head covering, such as a balaclava, that is shaped like a helmet.
- A piece of armor, usually made of metal, designed to protect the head.
- Botany The hood-shaped sepal or corolla of some flowers.
- To provide with or put on a helmet.