Definition of soap noun from the Oxford Advanced American Dictionary

      

    soap

     noun
    noun
    NAmE//soʊp//
     
     
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  1. 1[uncountable, countable] a substance that you use with water for washing your body soap and water a bar/piece of soap soap bubbles Avoid using perfumed soaps on sensitive skin.
  2. 2[countable] (informal) = soap opera soaps on TV She's an American soap star.
See the Oxford Advanced Learner's Dictionary entry: soap