Antique award I've cunningly pocketed (8)
I believe the answer is:
medieval
'antique' is the definition.
(thesaurus)
'award i've cunningly pocketed' is the wordplay.
'award' becomes 'medal' (medal is a kind of award**).
'cunningly' indicates anagramming the letters.
'pocketed' indicates putting letters inside.
'ive' with letters rearranged gives 'iev'.
'medal' enclosing 'iev' is 'MEDIEVAL'.
(Other definitions for medieval that I've seen before include "Belonging to the Middle Ages" , "Of an earlier period" , "Of the middle ages, or really old-fashioned" , "Am veiled in style of the middle ages" , "Relating to the Middle Ages" .)