Intaglio \In*tagl"io\, n.; pl. E. Intaglius, It. Intagli. [It., fr. intagliare to engrave, carve; pref. in- in + tagliare to cut, carve. See Detail.]

A cutting or engraving; a figure cut into something, as a gem, so as to make a design depressed below the surface of the material; hence, anything so carved or impressed, as a gem, matrix, etc.; -- opposed to cameo. Also used adjectively.

Source: Webster's Revised Unabridged Dictionary (1913)