Press, fighting with energy and metal objects (8)
I believe the answer is:
ironware
'metal objects' is the definition.
(I've seen this before)
'press fighting with energy' is the wordplay.
'press' becomes 'iron' (ironing is a kind of pressing).
'fighting' becomes 'war'.
'with' means one lot of letters go next to another.
'energy' becomes 'e' (physics symbol as in E=mc2).
'iron'+'war'+'e'='IRONWARE'
'and' acts as a link.
(Other definitions for ironware that I've seen before include "weighty equipment" , "Metallic goods" , "Metal objects" , "Class of metal goods" , "Items made of the element with symbol Fe" .)