Jump to:

• cast iron
  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.
• cast-iron
  cast-iron

  adjective

  made of cast iron.

cast iron

¹ American  

noun

1. 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.

---

cast-iron ² American  

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

adjective

1. made of cast iron.

2. not subject to change or exception.

   a cast-iron rule.

3. hardy.

   a cast-iron stomach.

---

cast iron British  

noun

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

---

adjective

1. made of cast iron

2. rigid, strong, or unyielding

   a cast-iron decision

Etymology

Origin of cast iron¹

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

Origin of cast-iron²

First recorded in 1655–65

Example Sentences

Laura Cherkas gives Aurora Sanchez a cast iron pan.

From Los Angeles Times • Apr. 22, 2026

Made In 7-piece Enameled Cast Iron Set -Enameled cast iron is a meaningful upgrade for any home cook ready to level up.

From Salon • Nov. 20, 2025

The pot itself is cast iron and can be used on the stove, along with the included fuel paste burner, which helps keep the cheese at the right temperature for enjoying.

From Salon • Nov. 20, 2025

He called on Lammy to give his "cast iron assurance" that Kebatu will be deported from the country by the end of the week.

From BBC • Oct. 27, 2025

Mama went to the backyard with Sisi to put away the cast iron cooking tripods.

From "Purple Hibiscus" by Chimamanda Ngozi Adichie