Definitions for jackknifeˈdʒækˌnaɪf

This page provides all possible meanings and translations of the word jackknife

Random House Webster's College Dictionary

jack•knifeˈdʒækˌnaɪf(n.)(pl.)-knives

  1. (n.)a large pocketknife.

  2. a dive in which the diver bends in midair to touch the toes, keeping the legs straight, and then straightens out.

    Category: Sport

  3. (v.i.)to bend over from or at the middle; double over like a jackknife.

    Category: Common Vocabulary

  4. (of a trailer truck) to have the cab and trailer swivel at the linkage until they form aVshape, as the result of an abrupt stop or accident.

    Category: Common Vocabulary, Transportation

  5. (in diving) to perform a jackknife.

    Category: Common Vocabulary, Sport

  6. (v.t.)to cause to jackknife.

    Category: Common Vocabulary

  7. to cut with a jackknife.

    Category: Common Vocabulary

Origin of jackknife:

1705–15, Amer.

Princeton's WordNet

  1. clasp knife, jackknife(noun)

    a large knife with one or more folding blades

  2. jackknife(verb)

    a dive in which the diver bends to touch the ankles before straightening out

  3. jackknife(verb)

    dive into the water bending the body at the waist at a right angle, like a jackknife

Wiktionary

  1. jackknife(Noun)

    A resampling method that applies estimators to all subsamples that each omit a single different group (possibly of a single datapoint) of the original sample to provide a sample distribution of the estimate.

Webster Dictionary

  1. Jackknife(noun)

    a large, strong clasp knife for the pocket; a pocket knife

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