NIELLO
- to decorate with a black metallic substance [v -ED, -ING, -S] / a black metallic substance [n NIELLOS or NIELLI]
- black metallic substance, consisting of silver, copper, lead, and sulfur, with which an incised design or ground is filled to decorate metal
- ornamental work so produced
- to decorate by means of niello; treat with niello or by the niello process
- a black metallic substance [n NIELLI, NIELLOS] / to decorate with niello [v NIELLOED, NIELLOING, NIELLOS]
- any of several black enamel-like alloys usually of sulfur with silver, copper, and lead
- piece of metal or an object decorated with niello