midiron n long iron with a nearly vertical face Usage(s) He took out a midironno, that would not do. It rose like a golf ball for a midiron over the heads of the players, bounced, bounded through the posts over 100 yards away. One match ended on the 17th green, when Goodman's putt, whacked with a midiron, failed to roll 30 ft. Synonym(s) two iron