cast iron

• Liga dura e quebradiça de ferro e carbono, geralmente usada para fazer panelas, tubos e peças de máquinas. Também é usada em sentido figurado para descrever algo extremamente resistente, rígido ou inabalável.

A hard, brittle alloy of iron and carbon, typically used for making cookware, pipes, and machinery parts. Also used figuratively to describe something extremely strong, rigid, or unyielding.

1. Type of metalB2formal

   A hard, brittle alloy of iron and carbon, shaped by casting in a mold.

   Ferro fundido

   • The old bridge was made of cast iron.
   • Cast iron skillets are known for their heat retention.
   • The factory produces cast iron pipes for plumbing.

2. Strong and unyieldingB2informal

   Used figuratively to describe something that is extremely strong, rigid, or unchangeable.

   Inflexível

   • He has a cast-iron stomach and can eat anything.
   • The company has a cast-iron guarantee on its products.
   • Her argument was cast iron and impossible to refute.