Definition of well known adjective from the Oxford Advanced Learner's Dictionary

      

    well known

     adjective
    adjective
    BrE BrE//ˌwel ˈnəʊn//
     
    ; NAmE NAmE//ˌwel ˈnoʊn//
     
     
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  1. 1  known about by a lot of people synonym famous a well-known actor His books are not well known.
  2. 2  (of a fact) generally known and accepted It is a well-known fact that caffeine is a stimulant.
See the Oxford Advanced American Dictionary entry: well known