ironman

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[edit] English

iron +‎ man

ironman (plural ironmen or ironmans)

(plural "ironmen") An extremely tough and strong athlete; often used specifically in reference to grueling athletic competitions
(Australian) A form of surf lifesaving competition which combines swimming, board paddling, ski paddling and running.
(Australian, by extension) The winner of such an event.
(plural "ironmans") A gruelling triathlon.
- 2007 July 21, Aimee Berg, “Far-From-Basic Training for a 135-Mile Footrace”, New York Times:
  
  “Every sense of your body is taken over by the climate,” said the New York City native Christopher Bergland, who set a record at triple ironmans (7.2-mile swim, 336-mile bike, 78.6-mile run) but failed to finish one of his three Badwater races.

triathlon