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English definition of “master”

master

noun [C] (TITLE)    /ˈmɑː.stər/ US  /ˈmæs.tɚ/
Master old-fashioned used before the name of a boy who is too young to be called Mr: the letter was addressed to Master John Owen.
(Definition of master noun (TITLE) from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)
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