protagonist Meaning, Definition & Usage

  1. noun a person who backs a politician or a team etc.
    champion; admirer; supporter; friend; booster.
    • all their supporters came out for the game
    • they are friends of the library
  2. noun the principal character in a work of fiction
    agonist.

WordNet

Pro*tag"o*nist noun
Etymology
Gr. first + an actor, combatant, fr. a contest.
Definitions
  1. One who takes the leading part in a drama; hence, one who takes lead in some great scene, enterprise, conflict, or the like.
    Shakespeare, the protagonist on the great of modern poetry. De Quincey.

Webster 1913