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The Britannica Dictionary

knuckler

1 ENTRIES FOUND:

knuckler (noun)

knuckler /ˈnʌkəlɚ/ noun

plural knucklers

knuckler

/ˈnʌkəlɚ/

noun

plural knucklers

Britannica Dictionary definition of KNUCKLER

[count] baseball

: knuckleball

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