Definition of "gyroball" [gyroball]

• A spinning pitch thrown most commonly by Japanese baseball players. (noun)

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• "Then two years ago pitcher Daisuke Matsuzaka -- celebrated for his "gyroball" -- set off a bidding war won by the Boston Red Sox with a payout of nearly $100 million."
• "It is called the gyroball, a Japanese pitcher, who is playing here in the United States, in the Major Leagues, brought a daunting new move that throws the game a curve."
• ""This so-called 'gyroball' is nothing more than a really good screwball, period.""