Webster's Revised Unabridged Dictionary · 1913

Schoolmaster

Schoolmaster , noun

1.
The man who presides over and teaches a school; a male teacher of a school.
Let the soldier be abroad if he will; he can do nothing in this age. There is another personage abroad, -- a person less imposing, -- in the eyes of some, perhaps, insignificant. The schoolmaster is abroad; and I trust to him, armed with his primer, against the soldier in full military array. — Brougham
2.
One who, or that which, disciplines and directs.
The law was our schoolmaster, to bring us unto Christ. — Gal. iii. 24