Master \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.

Source: Webster's Revised Unabridged Dictionary (1913)