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.
These verbs mean literally to move one way and then another, usually back and forth or to and fro. Some verbs often see figurative use: Swing usually applies to arclike movement of something attached at one extremity and free at the other: The ship's lanterns swung violently in the raging storm.2. a seat suspended from above by means of a loop of rope or between ropes or rods, on which one may sit and swing to and fro for recreation. 33. a style of jazz often played by a large dance band and marked by a smooth beat and flowing phrasing.