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• n  the color of freshly broken cast iron
• s  of the grey color of iron

• One was Senator William Cabell Bruce, Maryland Democrat, iron-gray soldier of the old school, the man who stood out against his party's alignment with the Republican insurgents .
• Hamlin Garland, broad-shouldered, powerful, with his mass of iron-gray hair, is one of the gayest and yet most dignified of our older men of letters.

• iron-grey