master (

     adj 1: highly skilled or proficient" "a master plumber"; "a master
            thief" [syn: master(a)]
     2: controlling; "master race"; "master plan" [syn: master(a)]
     n 1: an artist of consummate skill; "a master of the violin";
          "one of the old masters" [syn: maestro]
     2: a person who has general authority over others [syn: overlord,
     3: a combatant who is able to defeat rivals [syn: victor, superior]
     4: directs the work of other
     5: presiding officer of a school [syn: headmaster, schoolmaster]
     6: an original creation (i.e., an audio recording) from which
        copies can be made [syn: master copy, original]
     7: an officer who is licensed to command a merchant ship [syn:
        captain, sea captain, skipper]
     8: someone who holds a master's degree from academic
     9: an authority qualified to teach apprentices [syn: professional]
     10: key that secures entrance everywhere [syn: passkey, passe-partout,
          master key]
     v 1: be or become completely proficient or skilled in; "She
          mastered Japanese in less than two years" [syn: {get the
     2: get on top of; deal with successfully; "He overcame his
        shyness" [syn: overcome, get over, subdue, surmount]
     3: have dominance or the power to defeat over; "Her pain
        completely mastered her"; "The methods can master the
        problems" [syn: dominate]
     4: have a firm understanding or knowledge of; be on top of; "Do
        you control these data?" [syn: control]