Test gold share out (6)
I believe the answer is:
ordeal
'test' is the definition.
(I've seen this before)
'gold share out' is the wordplay.
'gold' becomes 'or' ('or' is the heraldic name for gold).
'share out' becomes 'deal' (dealing is a kind of sharing out).
'or'+'deal'='ORDEAL'
(Other definitions for ordeal that I've seen before include "Long, unpleasant experience" , "A tough and testing time" , "Prolonged suffering, difficult to endure" , "One may be difficult" , "severe test shows" .)