Definition from Wiktionary, the free dictionary
Derived from the casting of this form of iron. See wrought iron for comparison.
- A hard and brittle, but strong, alloy of iron, carbon, and silicon, formed by casting in a mould.
- Cast iron is popular for cookware where an even heating temperature is important.
hard, brittle alloy of iron, carbon, silicon
- (not comparable) Made of cast iron.
- I use a cast-iron skillet for frying pancakes.
2008, Steven P. Moysey, The Road to Balcombe Street: The IRA Reign of Terror in London, Binghamton, N.Y.: Haworth Press, ISBN 978-0-7890-2912-6, page 58:
- Three small gelignite bombs, with pocket watch timing devices, were concealed in packets small enough to fit through the slot of the standard cast-iron post box, the cylindrical bright red colored boxes so common throughout London.
- Durable; tough; resiliant.
- Ernest has a cast-iron constitution and never gets sick.
- Inflexible or without exception.
- The school's cast-iron policy on admissions fees left no leeway for needy students.
- 2016, Rod Liddle, What makes the white working class angry? Twits like Hsiao-Hung Pai (in The Spectator, 19 March 2016)
- As far as her own theories are concerned, she is limitlessly credulous, to a degree which makes me suspect that she is a cast-iron idiot.
- (durable, tough, resiliant): bulletproof, impervious, iron, robust, unshakable
- (inflexible or without exception): iron-clad, stern, unrelenting, unwavering
made of cast iron
durable, tough, resiliant
inflexible or without exception