poriomania (pÅrâ³ Ä-Å-mÄnâ² Ä-Ä) [Gr. poreia, walking, + mania, madness]
1 Refers to the bowler's motion that ends with the start of the delivery. 2  arm-swing: The arc of the bowling arm and hand from the swing to the backswing. 3  arrows: Targeting arrows that appear on the lane 12 to 16 feet beyond the foul line. 4  Also called darts.
1 Approach: Part of the lane from the back of the ball return area to the foul line. 2  Armswing: The arc of the bowling arm and hand from the first move toward the line until the delivery of the ball over the line. 3  Baby ball: To throw too delicate or release too carefully.