Brought in, not satisfied, to engrave (4)
I believe the answer is:
etch
'to engrave' is the definition.
(I've seen this before)
I can't explain the rest of the clue.
Can you help me to learn more?
(Other definitions for etch that I've seen before include "Make picture by engraving metal" , "Design by eating out" , "Cut lines with acid" , "Make a deep impression" , "Chase" .)