Definitions of pitcher:

• noun:   the position on a baseball team of the player who throws the ball for a batter to try to hit

  Example: "He has played every position except pitcher"

• noun:   an open vessel with a handle and a spout for pouring
• noun:   (baseball) the person who does the pitching

  Example: "Our pitcher has a sore arm"

• noun:   the quantity contained in a pitcher
• name:  A surname (rare: 1 in 50000 families; popularity rank in the U.S.: #4767)