Do some engraving (4)
I believe the answer is:
etch
'do some engraving' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for etch that I've seen before include "Design on metal or glass using acid" , "Carve into surface of something" , "Carve into surface, impress deeply" , "Cut; engrave" , "Score deeply" .)