We found one dictionary that defines the word soot blacks:

General (1 matching dictionary)

1. soot blacks: Vocabulary.com

(Note: See soot_black as well.)

Definitions from WordNet (soot black) ▸ noun:  a very dark black ▸ Also see soot_black ▸ Words similar to soot blacks ▸ Usage examples for soot blacks ▸ Idioms related to soot blacks ▸ Wikipedia articles (New!) ▸ Words that often appear near soot blacks ▸ Rhymes of soot blacks ▸ Invented words related to soot blacks