Engraving, in its broadest sense, the art of cutting lines in metal, wood, or other material either for decoration or for reproduction through printing. In its narrowest sense, it is an intaglio printing process in which the lines are cut in a metal plate with a graver, or burin. Furrows are cleanly cut out, raising no burr, and then filled with ink which is transferred under high pressure to the printing surface of the press.