intaglio
noun /ɪnˈtɑːliəʊ/
  /ɪnˈtæljəʊ/
 [countable, uncountable] (plural intaglios)
 (from Italian, art)- a design cut into a hard surface, or a surface that has been decorated with a design like this; the process of making intaglio designs- Cameos and intaglios were often made into rings.
- Engraving is the oldest and most common of the intaglio techniques.