[1] : The Collaborative International Dictionary of English v.0.48

lampblack \lamp"black`\, n. lamp + black.
   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.
   1913 webster

[2] : WordNet (r) 2.0

lampblack
     n : a black colloidal substance consisting wholly or principally
         of amorphous carbon and used to make pigments and ink
         syn: carbon black, soot, smut
see also:
carbon black soot smut 

Lampblack >> L Words
Lampblack, definition of term: Lampblack
lampblack_pag1.html