pacesetter

noun

1. a leading instance in its field; “the new policy will be a pacesetter in community relations”

   Synonyms

   • pacemaker

   Less specific

   • exemplar, example, model, good example

2. a horse used to set the pace in racing

   Synonyms

   • pacer, pacemaker

   Less specific

   • racehorse, race horse, bangtail