鉄てつ帽ぼうてつぼうMeanings1nounhelmetA straightforward term for a protective helmet, often military or industrial. Not the most common everyday word for helmet (see ヘルメット).工こう事じ現げん場ばでは鉄てつ帽ぼうの着ちゃく用ようが義ぎ務む付づけられている。Wearing a helmet is mandatory at the construction site.
