n. 25B6; noun
the leader of the Democratic Party : CHIEF, head, principal; commander, captain; controller, superior, headman; chairman, chairwoman, chairperson, chair; (managing) director, MD, manager, superintendent, supervisor, overseer, administrator, employer, master, mistress; president, premier, governor; monarch, sovereign; informal boss, skipper, gaffer, guv'nor, number one, numero uno, honcho; N. Amer. informal sachem, padrone. See list at ruler .
a world leader in the use of video conferencing : PIONEER, front runner, innovator, trailblazer, ground-breaker, trendsetter, torch-bearer; originator, initiator, founder, architect.
follower, supporter.