Definition of "Pitcher" :
noun: the position on a baseball team of the player who throws the ball for a batter to try to hit
"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
"Our pitcher has a sore arm."
noun: (botany) a leaf that that is modified in such a way as to resemble a pitcher or ewer
noun: the quantity contained in a pitcher