noun
1. a leading instance in its field
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the new policy will be a pacesetter in community relations
• Syn: ↑pacemaker
• Hypernyms: ↑exemplar, ↑example, ↑model, ↑good example
2. a horse used to set the pace in racing
• Hypernyms: ↑racehorse, ↑race horse, ↑bangtail
Useful english dictionary. 2012.