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ni·el·lo | \ nē-ˈe-(ˌ)lō 
\
\ plural nielli\ nē-ˈe-(ˌ)lē \ or niellos
\ or niellosDefinition of niello
(Entry 1 of 2)
1 : any of several black enamel-like alloys usually of sulfur with silver, copper, and lead
2 : the art or process of decorating metal with incised designs filled with niello
3 : a piece of metal or an object decorated with niello
niello
verbnielloed; nielloing; niellos
Definition of niello (Entry 2 of 2)
: to inlay or ornament with niello
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Time Traveler for niello
The first known use of niello was in 1816
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