Soot :  (noun)

1: a black colloidal substance consisting wholly or principally of amorphous carbon and used to make pigments and ink [syn: carbon black, lampblack, smut] (verb)

1: coat with soot

air pollution, alluvion, alluvium, ash, ashes, attritus, bedarken, begrime, bemire, bemud, besmirch, besmoke, black, blacken, blackening, blacking, blackwash, blot, blotch, bran, brand, burnt cork, calx, carbon, carbon black, charcoal, cinder, clinker, coal, coke, coom, cork, cosmic dust, crow, crumb, crumble, darken, denigrate, deposition, deposits, diluvium, dinge, dirt, dirty, dirty up, draff, dregs, dross, dust, dust ball, ebon, ebonize, ebony, efflorescence, ember, fallout, farina, feces, filings, flour, froth, fume, gas black, grime, grits, groats, grounds, ink, jet, kittens, lampblack, lava, lees, lint, loess, meal, melanize, mire, moraine, muck, muck up, mud, muddy, murk, night, nigrify, offscum, oversmoke, pitch, powder, precipitate, precipitation, pussies, raspings, raven, reek, sawdust, scoria, scum, sediment, settlings, shade, shadow, silt, sinter, slag, slime, sloe, smirch, smoke, smudge, smut, smutch, stove black, sublimate, sullage, tar,