Definition of "pumping iron" []

• Present participle of pump iron. (verb)
• : The activity of weightlifting, especially for the purposes of bodybuilding. (noun)

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• "The tattoos of the fighting rooster and coiled-up cobra on his forearms were bulging like he’d been pumping iron all night long, getting ready to pound Stani if he ever saw him again."
• "During the campaign, she had been photographed pumping iron for a cover story in George magazineBushs Kissinger: She Can Kick Your Butt Too."