The story
- Latin · calque ofplumbum nigrum“lead”
- English todayblack lead
In the sense of lead, calque of Latin plumbum nigrum (“lead”, literally “black lead”).
First known use, by meaning
- from 14th c. The metal lead.
- from 16th c. Graphite, especially as used in pencils.
- from 19th c. A type of polish made from graphite, used for kitchen cleaning and blackening grates.
Etymology from Wiktionary, CC BY-SA 4.0.