The Collaborative International Dictionary
Sooting
Soot \Soot\, v. t. [imp. & p. p. Sooted; p. pr. & vb. n.
Sooting.]
To cover or dress with soot; to smut with, or as with, soot;
as, to soot land.
--Mortimer.
Wiktionary
sooting
vb. (present participle of soot English)