| n. | 1. | A rider on horseback; one skilled in the management of horses; a mounted man. |
| 2. | (Mil.) A mounted soldier; a cavalryman. | |
| 3. | (Zool.) A land crab of the genus Ocypoda, living on the coast of Brazil and the West Indies, noted for running very swiftly. |
| Noun | 1. | horseman - a man skilled in equitation Synonyms: equestrian, horseback rider |
| 2. | horseman - a person who breeds and cares for horses Synonyms: horse fancier |