pacer

Definition of Pacer in English :

a horse used to set the pace in racing

2. pacer

a horse trained to a special gait in which both feet on one side leave the ground together

WordNet Lexical Database for English. Princeton University. 2010.

Pacer

noun

1.

a horse trained to move at a special gait, esp for racing

2. another word for pacemaker (sense 1)

noun

1.

one who paces

2.

an animal that paces; esp., a horse bred and trained for pacing in races

3.

pacemaker (sense 1)

n.

1. A horse trained to pace.

2. Sports See pacemaker.