WordReference Random House Learner's Dictionary of American English © 2026
ˈcast ˈi•ron, n. [uncountable]
ˈcast-ˈi•ron, adj. [before a noun]
WordReference Random House Unabridged Dictionary of American English © 2026- Metallurgyan alloy of iron, carbon, and other elements, cast as a soft and strong, or as a hard and brittle, iron.
ˈcast-ˈi•ron, adj. [before a noun]
- made of cast iron.
- not subject to change or exception: a cast-iron rule.
- strong;
hardy: a cast-iron stomach.
cast′ i′ron,
cast-i•ron (kast′ī′ərn, käst′-),USA pronunciation adj.
- Metallurgyan alloy of iron, carbon, and other elements, cast as a soft and strong, or as a hard and brittle, iron, depending on the mixture and methods of molding.
- cast (past participle of cast1) + iron 1655–65
cast-i•ron (kast′ī′ərn, käst′-),USA pronunciation adj.
- made of cast iron.
- not subject to change or exception:a cast-iron rule.
- hardy:a cast-iron stomach.
- 1655–65