Gold or copper, say (5)
I believe the answer is:
metal
I believe this is a double definition.
'gold' is the first definition.
(thesaurus)
'copper say' is the second definition.
(I know that copper is a type of metal)
(Other definitions for metal that I've seen before include "tin, perhaps" , "Zirconium, for example" , "Broken stones" , "Headbanger's music genre" , "Copper or gold, say" .)