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English definition of “master”

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master

noun [C]
 
 
/ˈmɑːstər/ US   /ˈmæstər/
WORKPLACE, IT an original of something such as a document, from which copies can be made: I kept the master and sent my accountant a copy.
a person who is very skilled in a particular job or activity: a master of sth She is a master of the art of persuasion.
(Definition of master noun from the Cambridge Business English Dictionary © Cambridge University Press)
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