Pacemaker

/ˈpeɪkˌmeɪ.kər/

Synonyms

  • leader
  • cardiac stimulator
  • heartbeat regulator
  • pace-setter

Slang Meanings

Someone or something that keeps things running smoothly.
He's the pacemaker of our team, always keeping us on track.
A trendsetter or innovator in a particular field.
In tech startups, he's seen as a pacemaker with all his new ideas.