Definition of "horseman"

horseman

/ˈhɔrsmən/

noun
plural horsemen
1. A man who rides a horse.
2. A soldier on horseback, especially a cavalryman.
  Quotations
  A thouſand Perſean horſemen are at hand,Sent from the King to ouercome vs all.
  c. 1587–1588, [Christopher Marlowe], Tamburlaine the Great. […] The First Part […], 2nd edition, part 1, London: […] [R. Robinson for] Richard Iones, […], published 1592; reprinted as Tamburlaine the Great (A Scolar Press Facsimile), Menston, Yorkshire, London: Scolar Press, 1973, (please specify the page)
  At this, the Shan-yü, leading over 100,000 horsemen through the fortifications, entered at the fortification of Wu-chou 武州.
  2011, Ssu-ma Ch'ien, edited by William H. Nienhauser, Jr., The Grand Scribe's Records, Volume IX: The Memoirs of Han China‎, volume II, published 2019, page 186
3. A man skilled in horsemanship, especially an equestrian.
4. (especially UK, agriculture, archaic) A man in charge of work horses; a teamster.
5. (especially UK, archaic) A man in charge of transport horses; a hostler (ostler).
6. (archaic) Any of the swift-running land crabs of the genus Ocypode.
7. (archaic) Any fish of the genus Equetus.
8. A fictional beast that is part horse and part man.