1. plural of ironman; athletes who compete in or complete ironman competitions, which are long-distance endurance races combining swimming, cycling, and running
Usage: often capitalized when referring to the Ironman brand competition; informal usage can refer to any extremely tough or durable person
2. plural of ironman; workers or laborers, especially in mining or heavy industry, known for their strength and durability
Usage: dated or historical usage; occupational

Examples

• The ironmen crossed the finish line after hours of grueling competition.
• Several ironmen trained together to prepare for the upcoming triathlon.
• The ironmen of the steel mill worked long shifts in difficult conditions.
• She joined a group of ironmen dedicated to completing the Ironman World Championship.
• These ironmen demonstrated incredible physical endurance and mental toughness.