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.
A person of considerable importance who is a major decision maker or capable achiever; an especially significant organization or an especially functional object.
A person who saves someone, rescues another from harm.
A child who is born to provide an organ or cell transplant to a sibling who has an otherwise fatal disease (used in combination, with "sibling", "baby", "child", "brother", "sister", etc.)