Definition of soot noun from the Oxford Advanced American Dictionary

     

    soot

     noun
    noun
    NAmE//sʊt//
     
    [uncountable]
     
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  1. 1black powder that is produced when wood, coal, etc. is burned see also sooty
  2. 2 The fireplace was blackened with soot. a cloud of smoke and soot
See the Oxford Advanced Learner's Dictionary entry: soot