knuckleball

  1. Noun.  (baseball) A pitch thrown with the ball gripped on the fingertips and released with no rotation which travels over an unpredictable path to the plate due to micro-turbulence in the air.
  2. Noun.  An event that is hard to predict.
  3. Verb.  (intransitive, baseball) To pitch knuckleballs.

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This entry was last updated on RefTopia from its source on 3/20/2012.