Something hard to pinch, we hear (5)

I believe the answer is:
steel
'something hard' is the definition.
I can't tell whether this definition defines the answer.
'pinch we hear' is the wordplay.
'pinch' becomes 'steal' (I've seen this before).
'we hear' indicates a 'sounds like' (homophone) clue.
'steal' sounds like 'STEEL'.
'to' is the link.
Can you help me to learn more?
(Other definitions for steel that I've seen before include "nerve" , "Strong metal" , "Mixture of carbon and iron" , "Strength, determination" , "Form of iron" .)
