Definition of smokeless adjective from the Oxford Advanced American Dictionary

     

    smokeless

     adjective
    adjective
    NAmE//ˈsmoʊkləs//
     
    [usually before noun]
     
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  1. 1able to burn without producing smoke smokeless fuels
  2. 2free from smoke a smokeless zone (= where smoke from factories or houses is not allowed)
See the Oxford Advanced Learner's Dictionary entry: smokeless