n. The act of throwing or casting; a cast; a pitch; as, wild pitching in baseball. The rough paving of a street to a grade with blocks of stone. (Hydraul. Eng.) A facing of stone laid upon a bank to prevent wear by tides or currents. Pitching piece (Carp.), the horizontal timber supporting the floor of a platform of a stairway, and against which the string pieces of the sloping parts are supported.