Cast-iron

adj, noun

adj, noun ·Uncommon ·Advanced level

Definitions

Noun
  1. 1
    Alternative spelling of cast iron. alt-of, alternative, countable, uncountable
Adjective
  1. 1
    Alternative spelling of cast iron. alt-of, alternative

    "The only part of the passenger railway still in private hands is the rolling stock. The rolling stock companies (ROSCOs) have a cast-iron guarantee that come hell or high water, they still get their charges. Even if half the fleet is parked up in sidings, they are still entitled to all their payments."

Adjective
  1. 1
    extremely robust wordnet

Synonyms

All synonyms
adamantdourfirmflintygrimhard

Example

More examples

"Ironbridge in Shropshire takes its name from the world's first cast-iron bridge, which was built there across the River Severn."

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Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.