noun
1. a horse used to set the pace in racing
• Syn: ↑pacemaker, ↑pacesetter
• Derivationally related forms: ↑pace
• Hypernyms: ↑racehorse, ↑race horse, ↑bangtail
2. a horse trained to a special gait in which both feet on one side leave the ground together
• Derivationally related forms: ↑pace
• Hypernyms: ↑horse, ↑Equus caballus
Useful english dictionary. 2012.