Work on an intaglio (4)
I believe the answer is:
etch
(Other definitions for etch that I've seen before include "Make incisions" , "Wear away by chemical reaction" , "Mark" , "Cut into a block used for printing" , "Engrave (metal, glass etc.)" .)
I believe the answer is:
etch
(Other definitions for etch that I've seen before include "Make incisions" , "Wear away by chemical reaction" , "Mark" , "Cut into a block used for printing" , "Engrave (metal, glass etc.)" .)