from The American Heritage® Dictionary of the English Language, 4th Edition

  • n. A male athlete of remarkable endurance or durability.

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • n. An extremely tough and strong athlete, especially one who competes in extreme athletic competitions or in a large number of games consecutively.
  • n. A form of surf lifesaving competition which combines swimming, board paddling, ski paddling and running.
  • n. The winner of such an event.
  • n. An extreme form of triathlon, expecially one organised by the World Triathlon Corporation that comprises a 2.4 mile swim, a 112 mile bike race and a marathon run.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

  • n. a strong man of exceptional physical endurance


From iron +‎ man. (Wiktionary)



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