Metal with a higher carbon content than steel (4,4)
I believe the answer is:
cast iron
(Other definitions for cast iron that I've seen before include "rigid" , "Unyielding" , "such an alibi?" , "safe" , "Unbreakable" .)
I believe the answer is:
cast iron
(Other definitions for cast iron that I've seen before include "rigid" , "Unyielding" , "such an alibi?" , "safe" , "Unbreakable" .)