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English definition of “master”

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master

noun [C] uk   /ˈmɑː.stər/ us    /ˈmæs.tɚ/

master noun [C] (CONTROLLER)

B2 the person who owns, cares for, and controls an animal: With careful training, a dog will obey its master completely. a person who employs a servant or owns a slave: Servants had to obey their masters. a person who has control over a particular situation: She was the victim of her circumstances rather than the master of her fate. the captain of a ship that carries goods : Ship's masters are in charge of a ship, its crew and any cargo it is carrying, at sea and in port.
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master noun [C] (SKILLED PERSON)

C2 a person who is very skilled in a particular job or activity: He was a master of disguise. a famous and very skilled painter: This painting is clearly the work of a master.
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master noun [C] (TEACHER)

UK old-fashioned a male school teacher: Mr Wells was my Latin master at school.Master (in the UK) the head of some schools or university colleges : The Master of St. John's College will be launching the appeal.
See also

master noun [C] (TITLE)

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.

master noun [C] (COPY)

an original version of something from which copies can be made: I sent her a copy and kept the master. You should keep the master copy (= the original) in a safe place.

master

verb [T] uk   /ˈmɑː.stər/ us    /ˈmæs.tɚ/

master verb [T] (CONTROL)

to learn to control an emotion or feeling: I finally mastered my fear of flying.

master verb [T] (LEARN)

to learn how to do something well: to master a technique She lived in Italy for several years but never quite mastered the language. He quickly mastered the art of interviewing people.

master

adjective [before noun] uk   /ˈmɑː.stər/ us    /ˈmæs.tɚ/
extremely skilled: a master craftsman a master chef
(Definition of master from the Cambridge Advanced Learners Dictionary & Thesaurus © Cambridge University Press)
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