Mas·ter v. t. [imp. & p. p. Mastered p. pr. vb. n. Mastering.]
 1. To become the master of; to subject to one's will, control, or authority; to conquer; to overpower; to subdue.
    Obstinacy and willful neglects must be mastered, even though it cost blows.   --Locke.
 2. To gain the command of, so as to understand or apply; to become an adept in; as, to master a science.
 3. To own; to posses. [Obs.]
 The wealth
 That the world masters.   --Shak.


 mastering
      n 1: becoming proficient in the use of something; having mastery
           of; "his mastering the art of cooking took a long time"
      2: the act of making a master recording from which copies can
         be made; "he received a bill for mastering the concert and
         making 100 copies"