铁人 tiěrén iron man Definitions Defs Origin Strokes Stroke Words Sentences Sents 铁人三项 tiěrénsānxiàng triathlon An Olympic multi-sport competition consisting of continuous swimming, cycling, and long-distance running; the name refers to the "iron man" will and physical strength required of participants.铁人三项赛 tiěrénsānxiàngsài triathlon Iron Man Triathlon