Butcher to carve ham (7)
I believe the answer is:
overact
'ham' is the definition.
(ham can mean to overact)
'butcher to carve' is the wordplay.
'butcher' indicates anagramming the letters.
'to'+'carve'='tocarve'
'tocarve' with letters rearranged gives 'OVERACT'.
(Other definitions for overact that I've seen before include "Be excessive like fulsome thespian" , "Ham (on stage)" , "Be unsubtle on stage" , "Play (part) in an exaggerated manner" , "behave exaggeratedly" .)