Dict: easton - Horseman

easton:

Horseman @ Heb. ba'al parash, "master of a horse." The "horsemen" mentioned kjv@Exodus:14:9 were "mounted men", i.e., men who rode in chariots. The army of Pharaoh consisted of a chariot and infantry force. We find that at a later period, however, the Egyptians had cavalry ( kjv@2Chronicals:12:3). (
See HORSE.)