Meaning
Any of various black metal alloys, made of sulphur with copper, silver or lead, used to create decorative designs on other metals.
Etymology
Origin: Latin
Borrowed from Italian niello, from Latin nigellus (“blackish”).
NYT Puzzle Appearances
No published puzzle dates on file for this word yet. It is part of the official NYT Spelling Bee word list for 2020, 2021, 2023, 2024, 2025, 2026.