Engraving (7)
I believe the answer is:
etching
'engraving' is the definition.
(I know that engraving can be written as etching)
This is the entire clue.
(Other definitions for etching that I've seen before include "craftwork" , "Eating away; corroding" , "Engraved picture" , "Engraving with acid" , "making an impression" .)