Promoter, n.
1. One who, or that which, forwards, advances, or promotes; an encourager; as, a promoter of charity or philosophy. Boyle.
2. Specifically, one who sets on foot, and takes the preliminary steps in, a scheme for the organization of a corporation, a joint- stock company, or the like.
3. One who excites; as, a promoter of sedition.
4. An informer; a makebate. [Obs.] Tusser.