D defs.my
Entry 2 senses Webster, 1913

Schoolmaster

/sko͞ol'-măsˌ-tẽr/ · School·mas·ter · IPA /skˈuːlmˌæstər/
01 n. The man who presides over and teaches a school; a male teacher of a school.
  1. 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. 2.
    One who, or that which, disciplines and directs.
    “The law was our schoolmaster, to bring us unto Christ.” — Gal. iii. 24.