The story
From the typical paint color and material traditionally used for free weights (cast iron with black paint).
Etymology from Wiktionary, CC BY-SA 4.0.
black iron
Today it means: Free weights as opposed to exercise machines. Full definition →
Today it means: Free weights as opposed to exercise machines. Full definition →
From the typical paint color and material traditionally used for free weights (cast iron with black paint).
Etymology from Wiktionary, CC BY-SA 4.0.