A person (or thing) instrumental in the creation or growth of something.
A benefactor; someone who donates to charity or some cause.
A person who produces articles published in a newspaper, magazine, online publication, etc.
A person who backs, supports or champions a cause, activity or institution.
A person of considerable importance who is a major decision maker or capable achiever; an especially significant organization or an especially functional object.
A player with a favorable batting average who is especially good at hitting the ball deep into the outfield or farther.
In any sport, a strong, physical player who is particularly effective.