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master (EN)
noun, adjective, verb

noun “master”

singular master, plural masters or uncountable
  1. someone who is very skilled or knowledgeable in a particular area
    Beethoven was a master at composing symphonies.
  2. a person who has authority or control over others
    The dog obeyed as soon as its master called its name.
  3. a person who owns a slave
    The slave had to endure harsh treatment from his master.
  4. the person in charge of a commercial ship
    The master of the vessel navigated through the storm with great skill.
  5. a person who hires and directs workers
    The carpenter's master was known for his fine craftsmanship.
  6. a qualified tradesperson who teaches and trains apprentices
    After years of experience, the electrician became a master and started training apprentices.
  7. an advanced academic degree following a bachelor's degree
    After completing her bachelor's, she pursued a master in environmental science.
  8. a person who has earned a master's degree
    As a master in architecture, she was sought after for her expertise in sustainable design.
  9. the original version from which copies are made
    The studio requested the master tape to produce more copies of the album.
  10. a device that controls or directs other devices
    The master server manages all the data transactions in the network.
  11. a ship with a specific number of masts
    The old painting depicted a three-master sailing across the ocean.

adjective “master”

base form master, non-gradable
  1. having or showing great skill or proficiency
    Her master stroke in the final set won her the tennis championship.
  2. the most important or main one
    The master bedroom in the house was twice the size of the other bedrooms.
  3. the first or original version
    The publisher kept the master edition of the novel in a secure vault.

verb “master”

infinitive master; he masters; past tense mastered; past part. mastered; ger. mastering
  1. to become highly skilled or proficient in something
    He spent countless hours practicing chess to master the game.
  2. to gain control over something or someone
    The young horse was difficult to train, but the trainer was determined to master it.
  3. to produce the master copy of a recording
    The sound engineer worked late into the night to master the live concert recording.
  4. to complete the requirements for a master's degree
    After completing her undergraduate studies, she decided to master in educational leadership.