noun
iron man; strong man; person of iron will
Describes a person with exceptional physical or mental toughness, often used metaphorically. Can refer to athletes, workers, or anyone with unyielding determination.
彼は毎日10時間も働く鉄人だ。
He's an iron man who works ten hours every day.
あの選手は怪我をしても出場する鉄人として知られ
That athlete is known as an iron man who plays even when injured.
noun
robot; steel-clad robot
Used in fiction, especially for humanoid robots or armored mechanical beings. Common in manga, anime, and tokusatsu.
そのアニメには空を飛ぶ鉄人が登場する。
In that anime, a flying robot appears.
鉄人28号は日本の古典的なロボット漫画だ。
Tetsujin 28-go is a classic Japanese robot manga.