Shellac the new counter (7)
I believe the answer is:
'shellac' is the definition.
(I've seen this in another clue)
'new counter' is the wordplay.
'new' indicates anagramming the letters.
'counter' anagrammed gives 'TROUNCE'.
'the' is the link.
(Other definitions for trounce that I've seen before include "Clobber" , "tank" , "Beat resoundingly" , "Hammer" , "Lick" .)