Fill empty Olympic trophy with brandy, finally (6)
I believe the answer is:
occupy
'fill' is the definition.
(I know that fill can be written as occupy)
'empty olympic trophy with brandy finally' is the wordplay.
'empty' means to remove the middle letters.
'trophy' becomes 'cup' (cup is a kind of trophy).
'with' is a charade indicator (letters next to each other).
'finally' indicates one should take the final letters.
'olympic' with its middle taken out is 'oc'.
The final letter of 'brandy' is 'y'.
'oc'+'cup'+'y'='OCCUPY'
(Other definitions for occupy that I've seen before include "Engage the attention of" , "Inhabit, take up space" , "Fill; keep busy" , "Bring engagement" , "'Fill a position, reside (6)'" .)