I. ˈ ̷ ̷ˌ ̷ ̷ noun
Etymology: lamp (I) + black
1. : a fine bulky black soot deposited (as from the flame of a smoking oil lamp) in incomplete combustion of carbonaceous materials ; especially : a soot obtained by burning liquid hydrocarbons (as creosote oil or petroleum fuel oils) that is characterized by a duller less intense black than channel black and other carbon blacks, by a blue undertone, and by a content of varying amounts of oily matter in addition to carbon and that is used chiefly as a pigment (as in paints, enamels, printing inks, and concrete) and as a source of carbon for electric brushes — usually distinguised from carbon black
2. : a nearly neutral slightly bluish black that is darker and slightly greener than Quaker blue
II. transitive verb
: to cover, coat, or smear with lampblack : blacken with lampblack
lampblacked platinum — Agnes M. Clerke