cast iron


noun

an 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.

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Origin of cast iron

1655–65; cast (past participle of cast) + iron

Definition for cast iron (2 of 2)

cast-iron
[ kast-ahy-ern, kahst- ]
/ ˈkæstˈaɪ ərn, ˈkɑst- /

adjective

made of cast iron.
not subject to change or exception: a cast-iron rule.
hardy: a cast-iron stomach.

Origin of cast-iron

First recorded in 1655–65
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2020

Example sentences from the Web for cast iron

British Dictionary definitions for cast iron

cast iron

noun

iron containing so much carbon (1.7 to 4.5 per cent) that it cannot be wrought and must be cast into shape

adjective cast-iron

made of cast iron
rigid, strong, or unyieldinga cast-iron decision
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012