[soot] n [ME, fr. OE sot; akin to OIr suide soot, OE sittan to sit] (bef. 12c): a black substance formed by combustion or separated from fuel during combustion, rising in fine particles, and adhering to the sides of the chimney or pipe conveying the smoke; esp: the fine powder consisting chiefly of carbon that colors smoke
[2]soot vt (1602): to coat or cover with soot