LAMPBLACK
Etymology
Noun
lampblack (countable and uncountable, plural lampblacks)
An amorphous form of carbon made from incompletely burned organic matter; used to make pigments and inks.
Verb
lampblack (third-person singular simple present lampblacks, present participle lampblacking, simple past and past participle lampblacked)
(transitive) To blacken using this form of carbon.
Source: Wiktionary
Lamp"black`, n. Etym: [Lamp + black.]
Definition: The fine impalpable soot obtained from the smoke of
carbonaceous substances which have been only partly burnt, as in the
flame of a smoking lamp. It consists of finely divided carbon, with
sometimes a very small proportion of various impurities. It is used
as an ingredient of printers' ink, and various black pigments and
cements.
Source: Webster’s Unabridged Dictionary 1913 Edition