1. verb
    have dominance or the power to defeat over; "Her pain completely mastered her"; "The methods can master the problems"
  2. verb
    have a firm understanding or knowledge of; be on top of; "Do you control these data?"
  3. verb
    be or become completely proficient or skilled in; "She mastered Japanese in less than two years"
  4. verb
    get on top of; deal with successfully; "He overcame his shyness"
  5. noun
    an original creation (i.e., an audio recording) from which copies can be made
  6. noun
    key that secures entrance everywhere
  7. noun
    a combatant who is able to defeat rivals
  8. noun
    an authority qualified to teach apprentices
  9. noun
    directs the work of other
  10. noun
    someone who holds a master``s degree from academic institution
  11. noun
    an officer who is licensed to command a merchant ship
  12. noun
    a person who has general authority over others
  13. noun
    presiding officer of a school
  14. noun
    an artist of consummate skill; "a master of the violin"; "one of the old masters"