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Webster 1913 Edition


Jackknife

Jack′knifeˊ

,
Noun.
A large, strong clasp knife for the pocket; a pocket knife.

Definition 2021


jackknife

jackknife

See also: jack-knife

English

Noun

jackknife (plural jackknives)

  1. Alternative spelling of jack-knife
    • 1887, Julian Hawthorne, A Tragic Mystery: From the Diary of Inspector Byrnes (page 25)
      [] near it is a cluster of weapons of villanous aspect, comprising every thing from a Malayan creese to a sailor's jackknife or a Smith & Wesson revolver.
  2. (statistics) 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.

Synonyms

  • (statistics): leave-one-out

See also

Translations

Verb

jackknife (third-person singular simple present jackknifes, present participle jackknifing, simple past and past participle jackknifed)

  1. Alternative spelling of jack-knife