Definition of "flutterball" []

• A type of pitch; knuckleball. (noun)

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• "Friends say he's still burned at a 1989 Sports Illustrated piece that accused him of "slinging flutterball wisecracks" rather than tough questions."
• "Wakefield was touched for two singles in the second inning, then retired 14 batters in a row with his dancing, tantalizing flutterball before the Yanks mounted their two-run uprising in the seventh."