Wiffle Look up Wiffle at Dictionary.com
hollow, perforated plastic ball, registered trademark name (The Wiffle Ball Inc., Shelton, Connecticut, U.S.), claiming use from 1954. According to the company, designed in 1953 by David N. Mullany "in response to a lack of field space and numerous broken windows by his baseball-playing son," the name based on whiff (q.v.), baseball slang for a missed swing.