Copper gets parking trophy (3)
I believe the answer is:
cup
'trophy' is the definition.
(cup is a kind of trophy)
'copper gets parking' is the wordplay.
'copper' becomes 'cu' (chemical symbol).
'gets' means one lot of letters go next to another.
'parking' becomes 'p'.
'cu'+'p'='CUP'
(Other definitions for cup that I've seen before include "Beaker" , "competition" , "Container to drink from - prize" , "Award; mug" , "Drinking bowl" .)