Definition of master adjective from the Oxford Advanced Learner's Dictionary



    BrE BrE//ˈmɑːstə(r)//
    ; NAmE NAmE//ˈmæstər//
    [only before noun]
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  1. 1master baker/chef/mason, etc. used to describe a person who is very skilled at the job mentioned
  2. most important
  3. 2the largest and/or most important the master bedroom a master file/switch
  4. Word OriginOld English mæg(i)ster (later reinforced by Old French maistre), from Latin magister; probably related to magis ‘more’.
See the Oxford Advanced American Dictionary entry: master