Definition of coal noun from the Oxford Advanced American Dictionary

      

    coal

     noun
    noun
    NAmE//koʊl//
     
     
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  1. 1 [uncountable] a hard black mineral that is found below the ground and burned to produce heat I put more coal on the fire. a lump of coal a coal fire a coal mine the coal industry
  2. 2[countable] a piece of coal, especially one that is burning A hot coal fell out of the fire and burned the carpet.
  3. Idioms
    rake somebody over the coals
     
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    to criticize someone severely because they have done something wrong
See the Oxford Advanced Learner's Dictionary entry: coal