Noun
a horse used to set the pace in racing
a leading instance in its field
Source: WordNetthe new policy will be a pacesetter in community relations Source: Internet
World 800 meters champion Donavan Brazier outran even the pacesetter as he romped to victory in the 600m at the Boston Indoor Grand Prix on Saturday. Source: Internet
Tymal Chrome earned his second Grassroots win with a gritty first-over trip, reeling in pacesetter Daylon Midnight and advancing down the stretch to a one length victory in 2:04.4. Source: Internet