historical
-
Cast Iron
A strong and durable iron alloy, primarily composed of iron, carbon, and silicon, which is typically molded into shape and often used metaphorically to describe something unyielding or exceptionally tough.
The meaning and origin of interesting English phrases
A strong and durable iron alloy, primarily composed of iron, carbon, and silicon, which is typically molded into shape and often used metaphorically to describe something unyielding or exceptionally tough.