Definition of dross noun from the Oxford Advanced Learner's Dictionary

     

    dross

     noun
    noun
    BrE BrE//drɒs//
     
    ; NAmE NAmE//drɔːs//
     
    , NAmE//drɑːs//
     
    [uncountable]
     
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  1. 1(especially British English) something of very low quality; the least valuable part of something mass-produced dross The well-written dialogue separates this film from the usual teenage dross. He considered the working class to be the dross of society.
  2. 2(specialist) a waste substance, especially that separated from a metal when it is melted The fire burns away the dross leaving the pure metal.
  3. Word Origin Old English drōs (in the sense ‘scum on molten metal’); related to Dutch droesem and German Drusen ‘dregs, lees’.
See the Oxford Advanced American Dictionary entry: dross