to come down; to descend.-to alight from a horse; to descend or get off, as a rider from his beast; as, the troops dismounted.-to throw or bring down from an elevation, place of honor and authority, or the like.-to throw or remove from a horse; to unhorse; as, the soldier dismounted his adversary.-to take down, or apart, as a machine.-to throw or remove from the carriage, or from that on which a thing is mounted; to break the carriage or wheels of, and render useless; to deprive of equipments or mountings; -- said esp. of artillery.