mastery

noun6

1. •
   The act or process of mastering; the state of having mastered; expertise.

   • He […]could attain to a mastery in all languages. — 1664
2. •
   The position or authority of a master; dominion; command; supremacy; superiority.

   • If divided by mountains, they will fight for the mastery of the passages of the tops. — 1610
3. •
   Superiority in war or competition; victory; triumph; preeminence.

   • The voice of them that shout for mastery. — 1611
4. •
   (no longer used) A masterly operation; a feat.

   • Ye welsh men..brake out vpon the Englysshe men in ye Bordour..and there made masteryes for a whyle. — 1516
5. •
   (no longer used) A contest for superiority.

   • […] pastimes of wrestling, and like masteries betweene the Citizens of London and others of the Suburbes […] — 1623
6. •
   (no longer used) The philosopher's stone.