(I) A large vessel for holding liquids, derived through Fr. from Med. Lat. picarium; the Lat. variant bicarium, Gr. /37Kos, has given the Ger Becher, Eng. beaker. (2) One who "pitches," i.e. throws, casts, fixes; the liable of the player in the game of base-ball who pitches or delivers the ball to the striker.