Definition of "jackknives" []

• Plural form of jackknife. (noun)

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• "The robbers made off with $125 in cash, a $300 gold watch, two jackknives, and three lead pencils, everything Twain had in his pockets."
• "Daddy would show us how to do front flips, back flips, swan dives, and jackknives."
• "This maneuver is often referred to as the “biker flip,” and is possible on nearly every folding knife except small, light jackknives and pen knives."