Definition of dreamer noun from the Oxford Advanced American Dictionary

     

    dreamer

     noun
    noun
    NAmE//ˈdrimər//
     
     
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  1. 1(sometimes disapproving) a person who has ideas or plans that are not practical or realistic
  2. 2(usually disapproving) a person who does not pay attention to what is happening around them, but thinks about other things instead
  3. 3a person who dreams Dreamers do not always remember their dreams.
See the Oxford Advanced Learner's Dictionary entry: dreamer