Definition of cast-iron
- a cast-iron stomach
- a cast-iron will
The fence is made of cast iron.
: made of cast iron
: very strong or tough
: not likely to fail or be broken
: a very hard type of metal that is made into different shapes by being melted and poured into special containers (called casts or molds)
What made you want to look up cast-iron? Please tell us where you read or heard it (including the quote, if possible).