Meaning of master of the horse in English:

master of the horse

noun

  • 1An officer in charge of the horses belonging to a sovereign, etc.; (also) an official of the British royal household who attends the monarch on state occasions and who has titular responsibility for matters of royal transport, etc. (also "Master of the King's (also Queen's) Horse(s)", formerly sometimes "†master of horses").

  • 2Roman History
    A commander of the cavalry appointed by a dictator of the Roman Republic.

  • 3 humorous A head groom or stableman.

Origin

Late Middle English; earliest use found in Rolls of Parliament. Originally with unchanged plural of horse.