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knuckleball

or knuck·le ball

[ nuhk-uhl-bawl ]

noun

, Baseball.
  1. a junk pitch that moves erratically toward home plate, usually delivered by holding the ball between the thumb and the knuckles of the first joints of the first two or three fingers:

    Trying to hit his knuckleball was like swatting at a fly with a straw.

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Word History and Origins

Origin of knuckleball1

An Americanism dating back to 1905–10

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Example Sentences

I was the one who taught him how to control his curveball and throw a knuckleball.

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