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.
Spin. A left-arm spin delivery turns from the leg side to the off when bowled at a right-handed batsman. It's bowled in the same way as a right-arm off spinner would deliver a normal off break.But because it's bowled with the left hand, the ball is released in the opposite direction, meaning it will turn away from the bat. left-arm spin delivery turns from the leg side to the off when bowled at a right-handed batsman. It's bowled in the same way as a right-arm off spinner would deliver a normal off break.