KJV Dictionary Definition: mastery
M`ASTERY, n. Dominion; power of governing or commanding.
If divided by mountains, they will fight for the mastery of the passages of the tops--
1. Superiority in competition; preeminence.
Every man that striveth for the mystery, is temperate in all things. 1 Cor.9.
2. Victory in war.
It is not the voice of them that shout for mastery. Ex.32.
3. Eminent skill; superior dexterity.
He could attain to a mastery in all languages.
4. Attainment of eminent skill or power.
The learning and mastery of a tongue being unpleasant in itself, should not be cumbered with other difficulties.