pacer

Definitions of pacer
  1. noun
    a horse used to set the pace in racing
    synonyms: pacemaker, pacesetter
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    type of:
    bangtail, race horse, racehorse
    a horse bred for racing
  2. noun
    a horse trained to a special gait in which both feet on one side leave the ground together
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    type of:
    Equus caballus, horse
    solid-hoofed herbivorous quadruped domesticated since prehistoric times
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