Original: In baseball, the pitcher is the player who throws the baseball from the pitcher's mound toward the catcher to begin each play, with the goal of retiring a batter who attempts to either make contact with it or draw a walk.
Simplified: In baseball, the pitcher is the player who throws the baseball from the pitcher's mound to the catcher to begin each play, trying to retire a batter who tries to either make hit it or draw a walk.