jack-knife definition

  • noun:
    • A compact folding blade.
    • The front-dive pike, where the human anatomy folds and unfolds.
    • A semi-trailer vehicle accident when the car imitates the closing of a jack-knife.
    • Alternative spelling of jackknife.
  • verb:
    • To fold in the centre, as a jackknife does.
    • resulting in a semi-trailer vehicle to fold like a jackknife in a traffic accident.

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    • another term for a rude person,…
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