American Idioms – Idiom Wizard Lists Over 5,500 Idioms & Slang Descriptions

Cast-iron stomach


Strong stomach. Someone who has no problems, complications or ill effects with eating anything or drinking anything. Seemingly can eat any kind of food without getting sick. The reference to ‘cast-iron’ presents an image of a sturdy pot that can hold any hot or acidic materials. A tough stomach. (Compare to Put away, Hungry enough to eat a horse, Lard belly or Eat like a horse.)

“I don’t know how grandpa has been able to eat grandma’s bad cooking all these years, he must have a cast-iron stomach.”

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