Beat, pummel (5)
I believe the answer is:
pound
This clue is a double definition.
'beat' is the first definition.
(synonyms)
'pummel' is the second definition.
(I've seen this before)
(Other definitions for pound that I've seen before include "Caged poet" , "Beat; money" , "Cars towed to it; hit heavily" , "Powder - 16 oz - 100p" , "Weight - currency - beat - enclosure" .)